Posts Tagged ‘JSB Match Diabolo Exact Jumbo Heavy pellets’

Benjamin Marauder .22 repeater with synthetic stock: Part 4

by Tom Gaylord, a.k.a. B.B. Pelletier

Benjamin Marauder PCP .177-caliber air rifle: Part 1
Part 2
Secrets of loading the Benjamin Marauder magazine
Part 3
Part 4
Part 5
Part 6
Fixing a Marauder magazine
Part 7
Benjamin Marauder .25 caliber: Part 1
Benjamin Marauder .25 caliber: Part 2
Part 3
Part 4
Benjamin Marauder .22 repeater with synthetic stock: Part 1
Benjamin Marauder .22 repeater with synthetic stock: Part 2
Benjamin Marauder .22 repeater with synthetic stock: Part 3
Benjamin Marauder .177 caliber 50-yard test: Special part

Benjamin Marauder with synthetic stock
New Benjamin Marauder with synthetic stock has all the features of the classic Marauder in a lighter, trimmer package.

Well, it’s certainly been a long time between reports on this rifle, hasn’t it? Today, we’ll begin looking at the accuracy of the .22-caliber Benjamin Marauder with the synthetic stock. Some of you have already asked me if I plan to also test the new wood-stocked Marauder that has the same new action as this one. I have no plans to test it because I feel this test encompasses everything on the rifle, except for the stock material.

I was particularly keen on testing this rifle because we had a couple new readers who had purchased this gun and were having accuracy problems with it. I wanted to pay closer attention to accuracy than normal. After all, this is a new action, even if the changes have been relatively minor. Also, this is the first .22-caliber Marauder I’ve tested. Since Crosman makes both the .177- and .22-caliber barrels and buys the .25-caliber barrels from Green Mountain, I feel it’s worthwhile to examine this rifle more closely.

Sight-in
I filled the rifle to 3,000 psi because we learned in Part 3 that it’s on the power curve with a 3,000 psi fill. Then, I fired a single shot from 12 feet to see if I was on paper. Following that, I backed up to 25 yards and refined my sight picture. Only the 14.3-grain Crosman Premiers went everywhere! I got them on target, but sometimes a pellet landed an inch away from the aim point.

What was happening?
This is what a couple readers had described, so I did what I advised them to do. I removed all the baffles (see Part 2 of the Synthetic Stock review for this) to see if the pellets were touching any of them. Since they’re just plastic, it would be obvious if a pellet nicked one; but there was no sign of this on close inspection. So, I assembled the baffles and closed the shroud again.

And the next 10 shots with Premiers were remarkable! They went into a group that measures 0.246 inches between centers. Right away I guessed what might be happening is that the rifle was smoothing out as the air pressure dropped. So, even though the power curve seems to support a 3,000 psi fill, the targets do not show the same thing.

Benjamin Marauder with synthetic stock Premier Group 1
Ten Crosman Premiers in 0.246 inches is pretty conclusive! The new synthetic-stocked Marauder can shoot!

You can’t tell everything from just a single group — even a tight one like this. More testing was needed, but now I would be careful about the pressure level at which the groups were shot.

I tried many more pellets, but I’m not going to show all the groups. In all, I fired a total of ten 10-shot groups, making this test more exhaustive than my usual 25-yard accuracy test. I wanted to pin down this pressure-versus-accuracy correlation to see if it was real or imagined.

JSB Exact Jumbo
The 15.89-grain JSB Exact Jumbo pellet gave a very clear example of how the pressure affects the groups. The first group was fired from a fresh 3,000 psi fill and 10 pellets went into 1.131 inches. You can tell at a glance that the pellets are scattered around.

Benjamin Marauder with synthetic stock JSB Exact Jumbo Group 1
On a fresh 3,000 psi fill, 10 JSB Exact Jumbos are scattered around in a 1.131-inch group.

The second group of the same JSB pellets was fired after the first group. By this point, the rifle’s internal pressure has dropped to the mid-2,000 psi point (2500 to 2600 psi). This group still isn’t a good one, but you can see that it’s tightening up. It measures 0.872 inches between centers.

Benjamin Marauder with synthetic stock JSB Exact Jumbo Group 2
The second 10 JSB Exact Jumbos on the fill tightened up to 0.872 inches. Still not a good group, but better than the first.

On the third group of 10 shots (still on the same fill), the group really tightened up. These 10 went into 0.592 inches. That’s a good group, but maybe I don’t want to use this pellet in this rifle because it seems too fussy.

Benjamin Marauder with synthetic stock JSB Exact Jumbo Group 3
The third 10 JSB Exact Jumbos on the fill tightened up to 0.592 inches. This is an acceptable 10-shot group for 25 yards.

No Predators, no Newboys!
I tried both Predator Polymag and Skenco Newboy Seniors, but both were too long to fit in the Marauder’s rotary magazine. If you want to use these pellets, you’ll need to use a single-shot tray; and since Crosman no longer makes them in .22, good luck finding one. Of course, you can load pellets without the tray, but it’s more difficult to align them with the breech.

I wondered how Premiers might do on the third batch of 10 shots after the fill. Ten pellets went into 0.496 inches. Not as tight as the second 10 after the fill, but still very good!

Benjamin Marauder with synthetic stock Crosman Premier Group 2
The third batch of 10 Premiers after the fill went into 0.496 inches. This is a good 10-shot group for 25 yards.

JSB Exact Jumbo Heavy
The 18.1-grain JSB Exact Jumbo Heavy pellets behaved much the same as the regular Jumbos, except the groups were tighter. The first 10 went into 0.653 inches; the second 10 went into 0.657 inches, and the third batch went into 0.591. All 3 groups are pretty close to one another; but in light of the Premiers and the Kodiaks we have yet to see, I don’t think they’re the best in this particular rifle.

Beeman Kodiaks
I was burned out when I got to the Beeman Kodiak pellets — 100+ shots is too much for a single session when every shot requires concentration. I didn’t mention shooting RWS Superdomes yet. I did shoot 1 group with them, and it was a bust at 0.83 inches. When I got to the Kodiaks, I wasn’t concentrating as well as I would have liked. And I shot this single group on a fresh 3,000 psi fill. I felt I could get away with that because of the weight of the 21-grain Kodiak pellet.

And I was right. Even though I was fading, 10 pellets still went into a tight round hole that measurtes 0.378 inches between centers! It’s the second-best group of the test and earns the Kodiak a spot in the 50-yard test, for sure!

Benjamin Marauder with synthetic stock Beeman Kodiak Jumbo Group 1
Ten Beeman Kodiaks made this very round 0.378-inch group at 25 yards. What a nice finish to today’s shooting!

What I’ve learned
The first thing I learned from today’s test is that this particular rifle doesn’t seem to shoot as well on a fresh fill as it does on the second and third magazine of pellets. So, if you stop filling at 2,600 psi, you’ll get 20 good shots from the rifle and not waste any air. I also learned that Crosman Premiers are the miracle pellet in this rifle, just like they’ve always been.

That last group of Beeman Kodiaks has me thinking that Premiers and Kodiaks will battle it out at 50 yards for the overall accuracy championship. I know Premiers are aerodynamically excellent, but the Kodiaks look like a real challenger in this air rifle.

I need to comment on the noise, or lack of noise. This .22 caliber Marauder is extremely quiet. It’s more like a .177 than it is like a .25 in that respect.

I expected to have problems with accuracy when I encountered those wild shots during sight-in. But by hanging in there and shooting both the second 10 and the third 10, I learned that this rifle likes to push its pellet slower than most. I would have to live with the gun for a long time to learn all of its secrets, but the test rifle is a very accurate PCP that’s worthy of the Benjamin Marauder reputation.

I like the synthetic-stocked rifle, but in my opinion it is no better than the older model in the wood stock. I never minded the thickness of the old wood stock, so I’m just going on the performance of the gun at this point.

BSA Scorpion 1200 SE PCP air rifle: Part 3

by Tom Gaylord, a.k.a. B.B. Pelletier

Part 1
Part 2

BSA Scorpion 1200 SE PCP air rifle
BSA Scorpion 1200 SE

We’re back to the BSA Scorpion 1200 SE. When we last tested it, we looked at the velocity and discovered this is a 30 foot-pound air rifle. So, its primary purpose is hunting. I thought that meant I should test some heavy .22-caliber pellets, but I also included a middleweight.

This test was done at 50 yards. I never shot the Scorpion indoors at 25 yards because it’s so loud. I went straight from mounting a scope to shooting at 50 yards. As it turned out, that cost me several more shots than normal to get on paper.

I scoped the rifle with the UTG 6-24X56 AP scope with illuminated reticle.

BSA Scorpion 1200 SE PCP air rifle scoped
The rifle is scoped with the UTG 6-24X56 AO. It compliments the range of this rifle well.

I knew the scope would be right for the Scorpion because BSA PCPs are very accurate. I wanted a lot of power in the scope to compliment the long-range capability. This scope gave me what I was looking for.

Beeman Kodiak
The first pellet I tried was the 21-grain Beeman Kodiak. The first group wasn’t good because the wind kicked up just as I fired a couple of the shots. Sure enough, the 10 holes had a horizontal spread. They measure 1.006 inches between centers, which isn’t bad, but I felt this pellet deserved a second chance.

BSA Scorpion 1200 SE PCP air rifle Beeman Kodiak group 1
The first group of Beeman Kodiaks measures 1.006 inches between the 2 farthest centers.

The second group of 10 Kodiaks measures 0.926 inches between centers. Although that isn’t that much smaller than the first group, this group is rounder; and I feel it’s representative of what Kodiaks will do in this rifle.

BSA Scorpion 1200 SE PCP air rifle Beeman Kodiak group 2
The second group of Beeman Kodiaks measures 0.926 inches between the 2 farthest centers. It is much rounder than the first group.

Eun Jin dome
I said during the velocity testing that the 28.4-grain Eun Jin dome would probably be good if you were seeking the maximum knockdown power at long range. They developed an additional foot-pound of muzzle energy. They’ve never been the most accurate pellets, but in some PCP rifles they do deliver credible accuracy.

Not in the Scorpion 1200 SE, though. The Eun Jin gave a large groups with a pronounced vertical spread. It measures 1.488 inches between centers and was the largest group of the test. I don’t recommend this pellet in the Scorpion 1200 SE.

BSA Scorpion 1200 SE PCP air rifle Eun Jin group
Ten Eun Jin domes went into 1.488 inches at 50 yards. The group is very vertical.

JSB Exact Jumbo Heavy, 18.1 grains
Next, I tried the JSB Exact Jumbo Heavy domed pellet. This one is between the medium-weight JSB Jumbo and the heavier Beeman Kodiak, so it gives better velocity with some good power retention. If it shoots at least as well as the Kodiak, it would be worth choosing.

But it doesn’t just shoot better — it shoots WAY better than the Kodiak in the Scorpion 1200 SE. Ten pellets made a group that measures 0.792 inches between centers. The group is very round, as you can see, so we know this pellet is a keeper!

BSA Scorpion 1200 SE PCP air rifle JSB Exact 18-grain group
Ten JSB Exact Jumbo Heavys went into this 0.792-inch group at 50 yards. This is the best group of the test, and this pellet is the clear choice for this rifle.

JSB Exact Jumbo 15.9 grains
The last pellet I tried was the 15.9-grain JSB Exact Jumbo. Sometimes this pellet is the best in a PCP rifle, so it had to be tried. This time, however, was not one of those times. Ten pellets made a 1.332-inch group that was not as tight as the Kodiaks or the 18.1-grain Exact Jumbo Heavys. And no wind caused the horizontal spread of these pellets.

BSA Scorpion 1200 SE PCP air rifle JSB Exact 16-grain group
Ten 15.9-grain JSB Exact Jumbos went into this 1.322-inch group at 50 yards. It’s very horizontal. Nothing seen here makes me want to use this pellet in the Scorpion 1200 SE.

Conclusions
The BSA Scorpion 1200 SE certainly has the power and accuracy needed to be a good hunting rifle. I like the way the stock balances in my hands when shooting, as it’s heavy at the muzzle. I don’t care for the fact that it needs 232 bar of fill pressure because that drains even a carbon fiber tank quicker than a 200 bar fill. It does, however, get a reasonable number of powerful shots per fill (25).

The 10-shot magazine is flawlessly reliable. There was never a misfeed in the entire test. And the magazine is below the top of the receiver, so it never interferes with the scope. The trigger is light enough, but I don’t care for the stage 2 creep that I found impossible to adjust out.

I would recommend this rifle to all who like its looks and features.

Evanix Rainstorm 3D bullpup: Part 4

by Tom Gaylord, a.k.a. B.B. Pelletier

Part 1
Part 2
Part 3

Evanix Rainstorm 3D Bullpup
Evanix Rainstorm 3D bullpup

It’s been some time since I did Part 3 of the Evanix Rainstorm 3D bullpup rifle. Just to remind you of where we left off, I found the gun difficult to shoot with the UTG 3-9X32 Bug Buster rifle scope because of the medium-height scope rings. I removed that scope and mounted the UTG 3-9X40 True Hunter rifle scope that comes bundled with high 2-piece Weaver rings. They were better, but even they seemed a bit too low because of the bullpup configuation. This is the same scope I used in the test of the Hatsan AT P1 PCP pistol.

Today’s test was done at 50 yards on an outdoor rifle range. The weather was perfect, without a hint of breeze. I didn’t sight-in the scope before going to the range, so I sighted-in at 50 yards. Luckily, the scope wasn’t that far off, and I was on target in 3 shots.

The 25-yard test that was done in Part 3 showed that only 2 pellets were worth trying at 50 yards. I shot just them and nothing else.

I also want to remind you that the rifle likes to be filled to 2,900 psi according to my tank’s gauge. It has more than 10 shots on a fill, but it does go through air pretty quick. So, just for continuity, I refilled after every group.

JSB Exact 15.9-grain domes
I sighted-in with the best pellet from the earlier test, which was the 15.9-grain JSB Exact Jumbo Heavy. Since the third shot landed where I wanted, I continued to shoot and made an 8-shot group for starters. That group measured 0.961 inches between centers. I noted that the bullpup-style stock made the rifle difficult to hold steady on target, so this group was as steady as I was able to hold. I was fighting the trigger, which breaks at 6 lbs., 10 oz. It’s hard to hold on target with a trigger this heavy. Also this rifle is tall and narrow, so it wobbles from side to side when you hold it. I didn’t see a way around that at first, but then I figured it out.

Evanix Rainstorm 3D bullpup sight-in target
Eight JSB Exact 15.9-grain domes landed in 0.961 inches at 50 yards. The shots are a little low, so I adjusted the reticle up a couple clicks after shooting this group.

Next, I shot a 10-shot group with the same JSB Exact Jumbo Heavy pellets. The rifle’s circular magazine holds 11 pellets, but I loaded it with only 10 to keep things consistent with most of my other 50-yard tests.

The scope had been adjusted higher for this group, so the shots landed higher on the bull. Ten pellets made a 1.501-inch group. I must comment that during this group I saw the crosshairs move around on the bull a lot more than I would like. That heavy trigger caused it. In the group that resulted, I see 2 separate points of impact that are one above the other. That isn’t what I would expect a sideways wobble to produce, but something was wrong with my hold. I had to solve that first.

Evanix Rainstorm 3D bullpup first JSB Exact Jumbo target
This is the first full 10-shot target that was fired at 50 yards with the Rainstorm bullpup. It measures 1.501 inches. Eight pellets went into 0.941 inches.

Toward the end of the first full group, I found a way to stabilize the rifle pretty well. I was shooting off a sandbag rest that helped with stability, and I found that if I gripped the frame tight (where the forearm would be on a conventional rifle) the wobble stopped. That made me more confident that the group I would be getting was what the rifle could actually do.

Following that group, I shot a second group of 10 JSB Exact Jumbo Heavies that measured 1.406 inches between centers. This one is fairly well centered on the bull and doesn’t have the 2 separate points of impact like the first group. I think the improved hold was responsible, although I can’t see why a sideways wobble would do what I’d seen before. Maybe the wobble was greater than I thought?

Evanix Rainstorm 3D bullpup second JSB Exact Jumbo target
The second full group was a little smaller than the first — at 1.406 inches between centers. I felt the rifle was held well for this group. This is as good as this pellet can do (in general) in this rifle with me on the trigger.

Beeman Kodiaks
Next, it was time to try 10 Beeman Kodiak, which was the second-best pellet at 25 yards. It didn’t do as well. The first few shots scattered all over the place, landing far to the left of the aim point and also a bit lower. When all 10 shots were finished, I had a 2.32-inch group that looks more like a shotgun pattern than a group from a rifle. However, I must note that 9 of those shots did land in a 1.331-inch group. But the one lower shot that opened the group wasn’t the last one. It was the third shot. Based on that, I would scratch Kodiaks for this rifle and stick with the JSB Exact Jumbo Heavies.

Evanix Rainstorm 3D bullpup Beeman Kodiak target
Beeman Kodiaks went all over the target. Ten made this 2.32-inch group, although 9 of them passed through 1.331 inches.

Overall impressions
I’ve come to the end of my test of this air rifle. It’s been an interesting journey, and I’ve learned some things from it. First, when you scope a bullpup, get the highest scope rings you can. Ring risers might be a good idea. Second, the idea that bullpup actions have poor triggers is apparently true. And finally, when the cross-section of your rifle is as flat as a flounder, it will be harder to hold steady.

The Evanix Rainstorm 3D bullpup rifle is definitely a different beast! It holds different and shoots different than a conventional PCP. If you’re looking for the bullpup styling, then either this or the Evanix Max bullpup is the airgun you want. It will produce acceptable accuracy out to 50 yards when you do your part. Just remember that the trigger is stiff and creepy, and the rifle needs a firm hold.

BSA Scorpion 1200 SE PCP air rifle: Part 2

by Tom Gaylord, a.k.a. B.B. Pelletier

Part 1

BSA Scorpion 1200 SE PCP air rifle
BSA Scorpion 1200 SE

We’re back to the BSA Scorpion 1200 SE. My hand has finally healed, and I can now work the Hill hand pump, but I stopped part of the way through the first fill and made the necessary changes to the carbon fiber tank hose, to attach BSA’s proprietary fill probe. I gave up because I just got tired of pumping! Those who encouraged me to do this from the beginning have won me over, I guess.

This PCP rifle takes a fill to 232 bar, which is 3,365 psi. We’ve looked at fill pressures for pneumatics a lot over the past month, and today we’ll see what this BSA rifle manages to do with its fill. The advertised number of shots is 25 per fill.

Because of the power potential of this rifle, I switched my backstop to the tough one blog reader Jim Contos made for me. If you want to read about this fine homemade quiet pellet trap that’s strong enough to stop the most powerful smallbore air rifle, here’s the link.

Familiarization with the magazine
After 10 minutes of trying (and failing) to load the 10-round spring-loaded magazine, I was prepared to blast BSA for creating a magazine that’s impossible to load. What we had, instead, was a B.B. who refused to learn new ways. The magazine loads easily once you do it the right way! I took a photo of the correct hold, so you won’t have the problems I did. Hold it like this and realize that BSA has designed this mag so the last pellet loaded holds the spring-tensioned drum in place until you’re ready to load the next pellet, and everything will be fine.

BSA Scorpion 1200 SE PCP aor rifle loading magazine
I’m holding both sides of the spring-loaded drum, making it easy to advance to the next pellet chamber. Once a pellet is loaded, it holds the drum in place until you advance it.

The magazine accepted all 3 of the pellets used in this test without a problem. They’re among the heaviest and longest .22-caliber pellets on the market, so I think you’ll be satisfied no matter what you try to shoot.

Pellet 1 — JSB Exact Heavy and the shot count
The 18.1-grain JSB Exact Jumbo Heavy pellet averaged 883 f.p.s. in the rifle. The velocity ranged from 875 to 888 f.p.s. over 25 shots. And 25 shots proved to be the limit, exactly as advertised. After shot 25, the next 5 pellets went this fast.

Shot….Velocity
26………876
27………870
28………866
29………866
30………860

Clearly, the rifle has just fallen off the power curve but in slow motion. So there are actually 30 safe shots on a fill, and that equates to 3 full magazines. I’m so glad BSA publishes accurate figures for these things, as many other airgun companies seem to have no clue what’s right!

At the average velocity, this pellet produced 31.34 foot-pounds of muzzle energy. And I bet this pellet is also accurate, though that has to wait until I get out to the range, because this rifle is too loud for shooting inside the house. I took a risk by chronographing it for today’s report, but that’s as far as I’m willing to go.

Pellet 2 — H&N Baracuda
The second pellet I tested was the 21.3-grain H&N Baracuda Match. These are longer pellets that sometimes have difficulty feeding through rotary magazines like the BSA’s, but there was no problem today! They averaged 815 f.p.s. and ranged from 811 to 819 f.p.s. At the average velocity, they produced 31.42 foot-pounds of energy at the muzzle.

The Baracuda is another pellet that should prove very accurate in this rifle. They should be the best pellet at 50 yards, but that remains to be seen.

Pellet 3 — Eun Jin
The third and final pellet I tested was the 28.4-grain Eun Jin dome. This is a very long pellet and may be the longest that will work safely in the BSA magazine. But they did fit perfectly and had no hangups once I learned how to load the magazine correctly.

Eun Jins averaged 718 f.p.s in the test rifle. They ranged from a low of 713 to a high of 726 f.p.s. At the average velocity, they produced 32.52 foot-pounds of energy at the muzzle. In other rifles, these pellets have never been the most accurate at 50 yards, but they have often been accurate enough to use as hunting pellets. However, as close as H&N Baracudas are in power, I would choose the most accurate of the 2 pellets after we test them at distance.

The velocity remained very tight throughout the entire fill with all 3 pellets that were tested. That means BSA has balanced their valve to work with exactly the amount of air they recommend using. And the fact that they got exactly the number of powerful shots they advertised was a welcome bit of news. Also, 25 shots is a good number for a rifle in this power class.

Adjusting the trigger
I mentioned in the first report that I would be adjusting the trigger in this report. To do that, the action is removed from the stock. The sear is a direct-contact type, so care must be exercised to not get the engagement surfaces too small, or the trigger will be in danger of jumping off from a bump.

The owner’s manual is a single sheet of paper printed on both sides, but the instructions for adjusting the trigger are good and thorough.

BSA Scorpion 1200 SE PCP air rifle adjusting trigger
The screw on the left adjusts the trigger-pull weight of the second stage. The nut and screw in the center adjusts the sear contact area and then locks in place. That adjustment affects the length of the second-stage pull. The screw under the trigger blade on the right adjusts the first stage and should not be touched, according to the manual.

I adjusted the trigger as light as it would go and set the sear as close as it would go and still be safe. The trigger still has significant creep in stage two, but it’s light and breaks at 2 lbs., 4 oz. I can work with it set this way.

50 yards next
Because of the rifle’s power, I’m going to skip the 25-yard test and go straight to 50 yards. If I’m successful, we should see accuracy that will override shooting at 25 yards, anyway. If I discover that’s the wrong way to do the test, I’ll change at the range and shoot at 25 yards first.

Evanix Rainstorm 3D bullpup: Part 3

by Tom Gaylord, a.k.a. B.B. Pelletier

Part 1
Part 2

Evanix Rainstorm 3D Bullpup
Evanix Rainstorm 3D bullpup

Today, we’ll look at the accuracy of the Evanix Rainstorm 3D bullpup PCP air rifle. Since this is such a powerful and loud air rifle, I decided not to shoot it in my house. So, today is a 25-yard accuracy test that was conducted at my rifle range. I doesn’t matter, though, because 25 yards is the same indoors or out.

You may recall that I adjusted the trigger last time. I said I got it as light as it would safely go because the adjustment acts on the sear contact area, so this day on the range was the first real chance I had to test it under real shooting circumstances. Although it’s a little heavy at 6 lbs., 10 oz., it’s now reasonably crisp. There is no significant creep in the trigger, which for a bullpup is pretty amazing. It’s about the same as some military rifle triggers. I can shoot this rifle with no excuses.

Someone thought that the rifle would be easy to cock because the sidelever is on the right side of the receiver. Well, touch your right shoulder with your right index finger to get an idea of how easy it is. I found it best to dismount the rifle from my shoulder to cock it each time.

Another assumption I made while in my office was that the Bug Buster scope that comes with medium-high rings would work well on this rifle. Size-wise it does look good; but when I went to shoot off the bench, I discovered that the high rings will be best, after all. That’s no reflection on the Bug Buster scope — the rings just need to be higher. As it is now, I have to tilt my head severely to see the image.

JSB Exact Jumbo Heavys
While I usually begin any shooting session at 10 feet to check the scope’s alignment, this time I settled down at 25 yards and just started shooting. The pellets for the first group landed 3 inches low and 1.5 inches to the left, which is not bad for just mounting the scope and shooting without sighting in. The first group was 10 JSB Exact Jumbo Heavy pellets — an 18.1-grain dome that often works well in airguns in this 40 foot-pound power range.

The first group measures 0.574 inches for 10 shot at 25 yards. I thought that was an auspicious start for this rifle.

Evanix Rainstorm 3D bullpup 25 yards JSB Exact Jumbo 18-grain group
Ten shots into 0.574 inches at 25 yards is a good start.

The rifle doesn’t move when it fires. I think that’s due to the weight, though I had a good hold on it, since I was in a somewhat odd position and had a tight grasp, just to see through the scope.

JSB Exact Jumbo Monsters
After the first group, I adjusted the scope by guesswork and brought the next group up to just under the bull I was aiming at. This was with a clip of the 25.4-grain JSB Exact Jumbo Monster pellets. This is another dome that’s even heavier than the tried-and-true Beeman Kodiaks. They acted like they wanted to group, but a couple strayed outside the main concentration, making me think they’re not the best for this rifle. Too bad; because at that weight, they really pack the punch.

Two pellets got stuck in the clip and had to be unloaded and reloaded to work right. That would be reason enough not to pick this pellet.

Evanix Rainstorm 3D bullpup 25 yards JSB Exact Monster 25-grain group
Ten JSB Jumbo Monster pellets went into 0.942 inches at 25 yards. Two pellets got stuck in the clip, so this pellet is not recommended for the 3D bullpup.

Eun Jin
Next, I tried 10 of the 28.4-grain Eun Jin domes. They just barely fit in the clip lengthwise and 2 got stuck in the magazine; but if they were accurate enough, I could overlook any shortcomings just to get the extra power. Ten landed in a group that measures 0.666 inches. That’s pretty darned good when the extra power is needed.

Evanix Rainstorm 3D bullpup 25 yards Eun Jin group
Ten Eun Jin pellets went into 0.666 inches at 25 yards. Two pellets got stuck in the clip, so this pellet is only recommended for this rifle when you need the extra power.

Beeman Kodiak
It was time to try the Beeman Kodiaks that I thought might be one of the best pellets in this rifle. And I was right! Ten of them went into a group measuring 0.491 inches — the smallest group of the test! Don’t be misled by the appearance of this group. It does appear larger than the first group, but careful measuring shows that it’s smaller.

Evanix Rainstorm 3D bullpup 25 yards Beeman Kodiak group
Ten Beeman Kodiaks went into 0.491 inches at 25 yards. No pellets were stuck in the clip, so this is the pellet of choice for the Evanix 3D bullpup.

RWS Superdome
The last pellet I tried was the 14.5-grain RWS Superdome. It’s a very popular pellet — especially among spring-gun shooters, so I thought I’d include it in this test. Boy, what a dramatic finish it was! Ten Superdomes went into a group that measures 2.914 inches between centers! If I hadn’t shot it myself I wouldn’t have believed it after seeing all those other groups! Obviously, I’m not going to recommend Superdomes for the Rainstorm 3D bullpup!

Evanix Rainstorm 3D bullpup 25 yards RWS Superdome group
Ten RWS Superdomes went into 2.914 inches at 25 yards. This is a non-starter for this rifle.

Cool carrying case
A while back, AirForce Airguns presented me with a TalonP pistol that I tested for you. They were kind enough to put it in one of their soft carry bags, and I found that it fits this bullpup perfectly! After posting this, Edith told me that the bag is no longer being made. If you are buying the 3D, you might want to try one of the tactical bags made by Leapers. They’re about the same size and are already linked to the gun on Pyramyd Air’s site.

Evanix Rainstorm 3D bullpup AirForce case closed
The AirForce tactical bag is perfect for the Rainstorm 3D bullpup.

Evanix Rainstorm 3D bullpup AirForce case open
Besides the rifle, there are many zippered pockets for the rest of your shooting stuff.

General impression thus far
I learned in this session that, while the Bug Buster is a wonderful scope, the medium-high rings it comes with are too low for this bullpup. Since I’ll be changing the rings anyway, I’ll use this opportunity to mount a different scope on the Rainstorm 3D bullpup.

I also learned that JSB Exact Jumbo Heavys (the 18.1-grain dome) and Beeman Kodiaks are the 2 best pellets in the test rifle. Next time, I’ll shoot these 2, plus perhaps one additional pellet I haven’t tried yet. That will be the final test at 50 yards.

The bullpup configuration was never meant to be shot from a bench. It would feel and handle much better in the offhand position, I’m sure. But the test was to prove how well the rifle shoots, which is why I shot it rested.

The long pull length is no hinderance whatsoever. I found that it supports the bullpup configuration and helps you control a rifle that’s otherwise too short.

If this is a rifle that fascinates you, I would have to say it’s probably a good one to get. I’ll still shoot it at 50 yards, but I believe today’s test shows all that you wanted to see.

Evanix Rainstorm 3D bullpup: Part 2

by Tom Gaylord, a.k.a. B.B. Pelletier

Part 1

Evanix Rainstorm 3D Bullpup
Evanix Rainstorm 3D bullpup

Well, the opinions of this rifle are sharply divided. People either love it or hate it, and nothing in between. A few haven’t made up their minds yet; but when they do, it’ll be one extreme or the other. The Evanix Rainstorm 3D bullpup is as far from a Diana model 27 as an air rifle can get.

Blog reader Rob is the only owner who has commented, thus far, and he says he loves his .25-caliber bullpup. He reports getting 25 good shots per fill and wants one in .177 for the greater shot count and 9mm for the additional power.

Some things I missed last time
I forgot to mention that there’s also a Picatinny rail under the forward part of the gun. This would be for a laser, flashlight or bipod.

I also failed to mention that the trigger is adjustable for both first- and second-stage pull. The second-stage adjustment is a sear contact adjustment, so you must be careful not to go too far or the gun will either become unsafe or won’t cock at all. After I see how the trigger is out of the box, I may attempt some adjustments.

Assumptions
Many of you took my comments too seriously last time. I mentioned that bullpup designs are notorious for poor triggers, and you assumed that this rifle’s trigger is bad. I haven’t tested it yet. It may be fine. We won’t know until I have the chance to shoot the gun.

And some of you criticized the gun for not having open sights. That’s like criticizing a Dodge Viper for not having a trailer hitch! The design of a bullpup doesn’t lend itself to the use of open sights. I don’t know of any bullpup firearms that have open sights, either. Compasseco used to sell a sidelever spring rifle bullpup that had open sights; but when you saw how high they had to be to be seen by the shooter, you understood why optical sights were preferred.

The magazine
The magazine is loaded through the larger hole on the left at the back. The back is the side where you can see 2 holes, while there’s only one hole visible at the front. The pellets do not drop into their holes. The have to be pushed in with something like a ballpoint pen. Once in, rotate the magazine one click counterclockwise and load again. Keep doing it until all 11 pellets are loaded.

Evanix Rainstorm 3D bullpup magazine
Load through the larger hole on the left. The pellets will not enter the magazine without a push from a ballpoint pen.

Velocity testing
Looking at the published velocity of the .22-caliber rifle I’m testing (1,176 f.p.s.), I decided that the gun wants to shoot heavy pellets. With all that power potential, this is potentially a 50 foot-pound air rifle, according to those numbers. The first pellet I loaded was the JSB Exact Jumbo Heavy pellet, which weighs 18.1 grains in .22 caliber.

Evanix Rainstorm 3D bullpup pressure gauge
This is what the on-board pressure gauge reads when the gun has 2,900 psi inside.

The gun does not have a flat power curve. It drops in velocity from the first shot to the last, similar to many other Korean-made magnum PCPs I’ve seen. The shot count is simply how far down you’re willing to allow the velocity to drop. The next numbers for the JSB Exact Jumbo Heavys should explain everything.

Shot     Vel.
1……….1045
2……….1033
3……….1020
4……….1022
5……….1006
6……….1008
7…………997
8…………991
9…………981
10………..971

Average (shots 1-10) 1007 f.p.s.; energy — 40.72 foot pounds

Shot     Vel.
11……….959
12……….948
13……….939
14……….926
15……….915
16……….910
17……….898
18……….892
19……….882
20……….874

Average (shots 11-20) 914 f.p.s.; energy — 33.58 foot-pounds

Shot     Vel.
21……… –
22……….867

After seeing the first string of 10 shots, I normally wouldn’t go any farther; but I know several of you may be curious to see if the gun ever settles down and delivers several shots of similar velocity. As you can see, it never does. After this string of shots, the pressure in the reservoir was 1,400 psi, so the gun was shot out. I call that 10 shots per fill.

If the valve were tuned to deliver about 30 foot-pounds, there would probably be a group of 20 shots or so that were similar in velocity. As the rifle is now, it is running flat out, as fast as it can from start to finish.

Beeman Ram Jets
Next, I tried the obsolete Beeman Ram Jet pellets. They weigh 16.5 grains and combine the dome and wadcutter shapes. After a fresh fill, they averaged 1026 f.p.s. for the first 10 and they ranged from a low of 997 f.p.s. to a high of 1051 f.p.s. As with the first pellets, the velocity fell straight from the first shot. At the average velocity, this pellet averaged 38.58 foot-pounds.

Eun Jin domes
The last pellet I tried was the 28.4-grain Eun Jin dome. I tried it for two reasons. First, I wanted to see if they would feed in the magazine. They fed perfectly, so this is a pellet you can shoot in this rifle — at least in .22 caliber. Second, since this was the heaviest pellet I could get through the magazine, I wanted to see what kind of energy it might develop.

Eun Jins averaged 877 f.p.s. for 10 shots on a fresh fill. The low was 844 f.p.s. and the high was 907 f.p.s. At the average velocity, this pellet generates 48.51 foot-pounds of energy at the muzzle.

Trigger
The trigger changed behavior, once the rifle was cocked. It became as stiff and creepy as the bullpup reputation has caused us to expect. However — and this is very significant — I adjusted stage two by the owner’s manual, and the pull became crisp and the letoff dropped to 6 lbs., 10 oz. This was as low as it would go and stay cocked because of the direct sear adjustment. There just wasn’t anymore contact area to play with after I finished adjusting it.

So far, so good. It’s obvious from these figures that this rifle is meant to be a hunting air rifle — pure and simple. Oh, and the discharge sound is a very loud number 5 on the Pyramyd Air sound scale.

AirForce Condor SS precharged air rifle: Part 7

by Tom Gaylord, a.k.a. B.B. Pelletier

Part 1
Part 2
Part 3
Part 4
Part 5
Part 6

AirForce Condor SS precharged air rifle with Spin-Loc tank
AirForce Condor SS with Spin-Loc tank.

I bet some of you thought we were finished with the AirForce Condor SS rifle with Spin-Loc tank. Well, we are…in a way. I’m removing the Hi-Flo Spin-Loc tank and replacing it with a standard AirForce tank. Instead of the Hi-Flo valve that gets 20-25 shots per fill, this tank has the standard valve that gives 35-40 good shots per fill. Of course, the power is lower, but it’s still a powerful airgun.

Blog reader Gunfun1 recently asked me to test the Talon SS rifle with all three barrel lengths so he could see the power and velocity increase that the longer barrels bring. I will do that in a future series, but today’s test is different. What we’re testing today is how a Condor powerplant and a .22-caliber 18-inch Lothar Walther barrel performs with the standard tank. The Condor and Condor SS share a common powerplant and air tank — only the barrel lengths differ.

Valvology
Let’s talk about pneumatic valves for a minute to gain a better understanding of what we’re testing. A couple things determine how much power a precharged pneumatic airgun has, and most of them are attributed to the valve. Fundamentally, it comes down to how much compressed air gets through the valve. That’s controlled by two things. The first is the size of the air hole running through the valve. A Hi-Flo valve has a huge hole running though it, so more air gets through each time the valve opens.

AirForce Condor SS Hi-Flo tank and standard tank
The Hi-Flo tank on the left has a larger hole at the end of its valve stem than the standard tank on the right. This is where the extra power comes from.

The second thing that determines how much air gets through a valve is how long it stays open. For a knock-open design like the AirForce valve, the duration the valve remains open is controlled by the length of the valve stem stroke and the strength of the valve return spring (the spring that closes the valve after the shot is fired).

Think of it like this. A hundred thousand people cannot all go through your front door at the same time. The number that can get through depends on how wide the doorway is and how long the door stays open. The moment the door starts to open, people can start coming though; and they’ll continue until the door closes. If a powerful man controls the door, only a few people will get through at a time. If a child controls it, many more will get though each time.

A Hi-Flo valve is like a very large door, while a standard tank is like a regular door. But here is the thing. No matter whether there are a hundred thousand people or two hundred thousand people outside the door (the analog of the air pressure inside the tank), only a certain number will get though each time it opens. And if the number of people outside the door becomes too large, they press against the door and hold it shut. No amount of force can open it then. That’s valve lock.

Barrel length
I’ve said many times that a pneumatic barrel is a lot like the barrel in a black powder gun — the longer the barrel is (within limits): the more time the gas has to push against the pellet, the faster it will exit the muzzle. Bore diameter also figures into this equation. A .177 barrel runs out of steam sooner than a .22 barrel does. The longer barrel is also tied to the caliber. This deserves an explanation.

Imagine 2 funnels. Both have spouts that are 3″ long. One spout is .25″ diameter on the inside, the other spout is 1″ diameter on the inside. Which funnel will empty fastest? The one with the wider spout. That’s because more of the material that passes through the funnel is not in direct (frictional) contact with the walls of the spout. Don’t get confused by what I just said. The larger spout does have more material that’s in contact with the spout; but because the inside diameter of the spout is larger, a much greater amount of material never touches the walls of the spout.

We’ve been testing a .22-caliber Condor SS that has an 18-inch Lothar Walther barrel. As we saw in the earlier tests, this barrel is 6 inches shorter than a regular Condor barrel and produces somewhat less velocity than a standard Condor of the same caliber. We’re now going to install a standard tank that has a smaller valve, so the velocity will drop. That’s one way of looking at it.

The other way to look at this is a standard Talon SS has a 12-inch Lothar Walther barrel. This rifle’s barrel is 6 inches longer. We’re about to see what a longer barrel does with the standard tank. The only difference between today’s rifle and an AirForce Talon (not the SS — the Talon that has an 18-inch barrel) will be the Condor powerplant, which means the weight of the striker. That will add a little velocity because the valve is being opened more forcefully. Going back to the door analogy, it won’t affect things nearly as much as those additional six inches of barrel.

Installing the standard tank
The Condor SS I have is fitted with a Spin-Loc tank. It stays on the rifle all the time and is filled through a male Schraeder nipple. To convert to the standard tank, I’ll remove the Spin-Loc tank with the wrench supplied by AirForce. Then the standard tank will spin on and off for filling, just like it does on my older Talon SS. No tools are required, but of course it does not have a built-in pressure gauge, either. So, I’m back to counting the shots fired; but in today’s test, we’ll see exactly how many good shots there are in this tank at high power.

The test
For the purpose of comparison, I’m going to test the same pellets and the same power settings as were used in the Condor SS test. While those pellets aren’t necessarily correct for this lower-powered rifle, it will give you a basis for comparison between the two tanks, which is all we’re testing here.

Condor SS velocity

AirForce Condor SS velocity data

What we have learned?
There isn’t much adjustability with the Condor SS using the standard tank. I haven’t given you the velocity spreads or the shot count, which are all very close, regardless of the power setting. I actually recorded over 40 shots on power setting 10; so I think I would shoot 40 shots per fill, regardless of where the power was set. The velocity spread varied by pellet, but not so much by power setting. It was about 32 f.p.s. across 40 shots for Eun Jin 28.4-grain domes; 41 f.p.s for 40 Premiers; 25 f.p.s. for 40 JSB Exact Jumbos, except on power setting 4, where it was 17 f.p.s. and 15 f.p.s. for 40 Beeman Kodiaks.

I would set the power on No. 4 for the test rifle because that setting gave more power and velocity than any other setting. You probably want to know why that is. I think the valve opens too forcefully at settings above 4, and it bounces (flutters open and closed rapidly) on the valve seat, costing power. But on setting 4, it doesn’t bounce and thus gets the highest power. Note that setting 2 was always less than setting 4. I believe the valve on setting 2 is not bouncing, but actually opening cleanly, which is why it resembles some of the higher power settings that are bouncing. At least that’s my theory.

The Condor SS is quieter with the standard tank, but it isn’t absolutely quiet. It sounds about like a Talon SS at power setting 10. That’s pleasant, like a loud hand clap. It is quite a bit quieter than with the Hi-Flo tank attached.

Summary
There’s less power when you use the Condor SS with the standard tank, but you just about double the shot count. And the discharge noise is less than that of the gun with the Hi-Flo tank.

What you get when the rifle is set up this way is a Talon that’s a little quieter. The Talon has more adjustability, of course, but today we’ve looked at a way to enjoy more flexibility from your rifle without buying another complete PCP.

If I were to use the standard tank with the Condor SS, I would set it to power level 4 and shoot 40 shots per fill. That would be regardless of which pellet I used.

We’ve already seen the accuracy of this rifle at 25 and 50 yards. Is it necessary for me to do those tests again with the standard tank installed? I think the group sizes will be similar, but of course they’re never quite the same. I’ll let you readers decide.

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