Posts Tagged ‘RWS Superdome pellets’
by Tom Gaylord, a.k.a. B.B. Pelletier
Today is the start of accuracy testing for the Octane combo air rifle, and I’m going to make some changes. For starters, I’m going to give you the summary now. The Octane is a smooth-shooting, accurate air rifle. It’s everything the manufacturer wants it to be, and a couple of things they probably didn’t think about, on top of that. The rest of this report will justify and explain my summary.
Another thing, the Octane is different from any gas spring I’ve ever tested. Gas springs always fire fast, as in instantaneously. When the sear releases, the shot is over, and you usually know it from the sharp crack of sound and the painful slap to your cheek. The Octane fires slowly in comparison. There’s a lot of forward recoil and almost no vibration, and the discharge is very quiet, as I noted in part 2. I attribute this behavior to the Reaxis gas-spring design that’s reversed from the norm, and to the SilencAir silencer on the muzzle. Both apparently work as advertised.
I decided to just shoot 5 shots per pellet today, and to shoot the rifle with open sights at 10 meters. I wanted to get a good sense of how accurate it is before putting the walls of my house at risk. And what I discovered was that this rifle is fun to shoot! I normally don’t have much fun shooting a 20 foot-pound spring rifle, but the Octane is so civilized that it gave me a lot of confidence. By the time I’d fired the first 2 shots at the target, putting them into the same hole, by the way, I knew this day was going to be fun.
I held the rifle with an artillery hold, but the thumbhole stock makes you grip the gun harder than you normally might. So, I would have to call it a modified artillery hold. But the rifle cooperated, and there was noting to worry about. The muzzle heaviness holds the front sight steady on target once you’re dialed in.
The sights are fiberoptic, which destroy all attempts at precision, but by lighting the target brightly and sitting in a darker room to shoot, I could defeat the fiberoptic tubes and get a very sharp sight picture. When they don’t glow, the Octane’s sights offer a nearly ideal sight picture, and that was what made me decide to not mount the scope, yet. I wanted to have the fun of shooting with open sights since the rifle was cooperating.
The trigger is still quite heavy and very creepy, so I envy those who own their rifles and can modify them. If I could drop the release weight to under 4 lbs. and if there was a way to eliminate all the second-stage creep, this trigger would help accuracy greatly.
The first target was shot with 5 Beeman Kodiak pellets. This was when I first noticed how slow the Octane’s gas piston is. It feels like an airgun equivalent of a 45-70 single-shot. You feel the recoil and the rifle bounces around, but you know the pellet got out of the muzzle before all that started and that accuracy wasn’t affected in the slightest.
As I said, the first 2 pellets cut the same hole, though each made a distinctive mark. Then I stopped watching through the spotting scope and just shot the next 3 pellets. In the end, the group is larger than I would have liked for 10 meters, at 0.581 inches, but this is with open sights. Still, it is just 5 shots instead of 10.
Next, I tried the RWS Hobby pellet. It felt good while loading because it fit the breech tight but not overly so. And, though the point of impact shifted up a bit, the Hobby was quite accurate — putting 5 pellets into 0.368 inches! I thought that was remarkable. I couldn’t wait to test some more pellets!
Next, I tried the RWS Superdome. Here’s where you’re going to see something significant. RWS makes both Hobbys and Superdomes in Germany, and presumably they use the same lead alloy for both. And domed pellets are generally regarded to be the most accurate. Yet look at how the Superdomes did! They grouped horizontally, to exactly 1 inch, while the Hobbys stayed together.
You might try to blame me for getting tired at this point in the test, but there’s group coming that will show that I was still shooting my best. That’s one benefit of these 5 shot groups. They don’t tire me as quickly.
Now, for those of you who think I might have slipped up on the last group, I shot 5 Predator Polymag pellets next. They’re a recognized premium pellet, just like the Superdomes, and I’ve shown some great groups using them in recent tests. But not this time. Instead of the group stringing sideways, the Predator group were stringing vertically. Five went into 0.982 inches, so we won’t be seeing them in any future tests of the Octane.
If you have now decided that I’ve gotten tired and ho-hum, what’s so special about the Octane if this is the best that it can do — hold on! I saved the best for last. Actually, the Octane saved the best for last because the next group is the last one I shot on this day.
The 14.3-grain Crosman Premier pellet is sometimes the best pellet you can use in an airgun. And it is in the Octane test! Five Premiers went into a group measuring 0.245 inches between centers. It looks like only 3 pellets have passed through, but I did shoot all 5. This is very clearly and hands-down the most accurate pellet I tested in the Octane.
I already gave you the summary in the beginning of this report. Now you see the substantiation of what was said.
Several readers reported higher velocities than I got in the last test, and I was asked to change the breech seal. Well, I might do that, but frankly the rifle is shooting so nice right now that I don’t feel any urgency.
The Octane is unlike any gas-spring breakbarrel rifle I’ve ever tested. I wish the trigger was better, but it’s hard to argue with the accuracy or with the rifle’s firing behavior.
I will skip testing the rifle at 10 meters with the scope that comes in the package and go straight to 25 yards next time.
by Tom Gaylord, a.k.a. B.B. Pelletier
Today, I’m testing the Crosman MTR77NP scoped air rifle for accuracy at 25 yards. This is going to be a very different accuracy report, for I have no targets to show you. Well, there is one target, but it wasn’t shot with the test rifle.
In the last report, I mentioned that I wanted to mount a different scope on the test rifle and test it at 25 yards. I thought the Bug Buster 3-9x scope would be a good one, and I also shimmed under the rear ring because the rifle was shooting low in the 10-meter test.
I thought the rifle would group about 3 times larger at 25 yards than it had at 10 meters, but I also hoped some pellets might remain tighter than that. What happened, however, was just the reverse. Instead of 3-inch groups I got 5- to 6-inch “patterns.” I won’t call them groups because not all pellets fired even hit the target trap. And when that happens, I stop shooting that particular pellet immediately.
Crosman Premier lites
First up was the pellet I thought had the best chance to do well — the 7.9-grain Crosman Premier. They had done well at 10 meters with just 2 pellets outside the main group. Had they held to my 3X size increase, they would have grouped into about 2.2 inches; but when the third shot landed 6 inches away from shots 1 and 2, and then shot 4 landed 5 inches from that pellet, I stopped shooting.
I checked the scope mount to see that it was still tight. It was, and I’m pretty sure this scope is a good one because it has done well in other tests on other airguns. So, Premier lites are out.
H&N Baracuda Match
Next, I tried some H&N Baracuda Match pellets. But they were no better. They hit the target lower than the Premiers, and 3 shots landed in about a 5-inch pattern. Then, one pellet missed the target trap altogether. I stopped shooting after that shot, but I wasn’t done with this pellet.
I got the Air Venturi Pellet Pen and Seater and deep-seated a couple Premier lites to see what affect that would have. The point of impact changed, but the accuracy didn’t improve. And when the third shot missed the trap, I stopped shooting Baracudas.
The next pellet I tried was the RWS Hobby, which gave such a nice, round group at 10 meters. Two shots landed together, and I thought we were on the right road; then the next shot hit about 6 inches away from them. The 4th shot missed the trap altogether, and I stopped shooting that pellet.
By now, I was in a quandary. Was it me or the gun or the scope? I went back to 12 feet from the target and confirmed that the scope was still shooting to the same point, then I went back to 25 yards and tried an RWS Superdome. I had confirmed at 12 feet that the Superdome would be on paper at 25 yards and the first shot was. It landed high, but in good enough position to keep shooting. The next shot missed the paper altogether and I don’t know where it went. That was it for Superdomes.
What to do?
By this point I was really shaken. My confidence was ebbing fast and I needed to end this session on a high note. So I grabbed my Beeman R8 Tyrolean and a tin of Air Arms Falcon pellets and shot a final group of 10 at 25 yards. This one turned out good, as I expected it would. That’s where today’s target comes from. It isn’t the best group I’ve shot with the R8, but it’s a darn sight better than I did with the MTR77NP. Ten shots went into 0.41 inches.
I need some time to think about why this rifle might be performing like it is. If one of you made a report like this to me, I would tell you to check the scope because that sure seems like what it is. But I did check the scope and found no problems. The one thing left to do is to crank the elevation down all the way and all the way to the left and shoot a group. If it tightens up, then it was the scope. If not, it’s either the mounts or the rifle.
A little tip
What I did with the R8 today is a handy tip to remember. Sometimes the problem is you — or you wonder if it might be. Shooting a good group with a rifle of known accuracy is the best way to rule that out.
by Tom Gaylord, a.k.a. B.B. Pelletier
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.
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.
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?
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.
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.
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.
by Tom Gaylord, a.k.a. B.B. Pelletier
Benjamin Marauder .177 caliber: Part 1
Benjamin Marauder .177 caliber: Part 2
Secrets of loading the Benjamin Marauder magazine
Benjamin Marauder .177 caliber: Part 3
Benjamin Marauder .177 caliber: Part 4
Benjamin Marauder .177 caliber: Part 5
Benjamin Marauder .177 caliber: Part 6
Fixing a Marauder magazine
Benjamin Marauder .177 caliber: Part 7
Benjamin Marauder .25 caliber: Part 1
Benjamin Marauder .25 caliber: Part 2
Benjamin Marauder .25 caliber: Part 3
Wow! More than one month has passed since the last part of this report. I’ve been to the Roanoke airgun show and also out to the rifle range at least 3 times trying to get the data for today’s report, but what a quest it has been! It all boiled down to false confidence in my ability to get the job done. I’m used to certain rifles cooperating with me every step of the way, and this time I got called by the fates who expose pride for what it is.
I’m not going to bore you with all the details, but I will point out the most recent example of my stupidity because it’s a lesson for us all. When I went to the range last week, I thought I was ready to complete my 50-yard test of the .25-caliber Benjamin Marauder. I’d swapped the scope mounts from a previous test because they were too high. The new mounts were lower, and I didn’t have to hold my head as high on the comb. I knew this would help with the accuracy. But then I went to the Roanoke airgun show, and forgot that I’d made this change.
What’s most important about the change, though, are that the new mounts were vintage B-Square adjustable mounts. And the rear ring was jacked up higher than the front. I always liked that setup because it gets the drooper problem taken care of on the first shot — even if there isn’t one! But not if you forget that you did it!
And that’s why this report didn’t happen last week. I had the Marauder at the range with the TX200 Mark III, on which I reported last weekWhen I shot the Marauder, there wasn’t a pellet hole on the paper. And I’m not just talking about the target paper, either. I mean the 2-foot x 4-foot backer paper that I use whenever I have a rifle that’s not known to be sighted-in.
Naturally, I was disappointed. This was a Marauder after all, and I expected it to go right to the point of aim. After shooting just two 8-round magazines, I took the rifle off the line and put it away. I needed to look into the situation deeper and figure out what was wrong.
What was wrong, was that I had forgotten about the new scope mounts. When I looked at the scope back in my office, I immediately saw that the rear was higher than the front. Then I vaguely remembered something about changing the mounts before going to the Roanoke airgun show, so I reread the last report and discovered what had happened. The gun had not been sighted-in with the new mounts. It was obvious that the scope was set up for a rifle with severe barrel droop, and this rifle doesn’t have that.
I even went back to the rifle range last Friday and looked at the backer board where my target and backer paper had been stapled. Sure enough, above where the top of the paper had been there was a hole in the backer board. It had the appearance of a nice rifle group. And some of the holes in the group appeared to be .25 caliber.
Suspecting what happened, I started shooting at an aim point much lower than my anticipated target. Sure enough, my pellet was hitting the paper about 16 inches high and 6 inches to the left. That’s a problem I can deal with! All I had to do was adjust the scope down and to the right, and I was on target. It took me less than 10 minutes to get my groups landing where I wanted at 50 yards. Now, it was time to test the rifle.
The first group was shot with H&N Baracuda pellets. In the past, these were the most accurate .25-caliber pellets on the market, but they have since been replaced by several others, including one huge surprise that emerged in this test! The group measured 1.021 inches between centers. It’s a good group for any rifle at 50 yards, but I did think the Marauder might be capable of better.
I should mention that I was firing two magazines of eight shots each in this test. So the groups that you see have 8 pellets and not 10 in them. I recharged the rifle with air after every 16 shots because the reservoir pressure had dropped to around 2,100 psi by that point. That was as low as I felt it could go and still be accurate.
JSB Exact King
The next pellet I tried was the JSB Exact King, a .25-caliber pellet that’s shown a lot of promise in recent testing. The first group I shot measured 1.447 inches between centers. That’s not very good for a PCP rifle at 50 yards. Interestingly, however, 7 of those 8 shots went onto 0.719 inches, and that is good. I hoped that the one flyer was an anomaly, and that a retest of the same pellet would do better.
The second group of JSP Exact Kings when into 1.094 inches. That’s a lot better, but it still wasn’t what I’d hoped for, so I left the Kings to try other pellets.
Another stunning pellet in .25 caliber is the Benjamin dome. It has no model name, but you could think of it as a Premier pellet because it looks similar to the other pellets in the Premier line. The first group of 8 pellets measured 1.226 inches between centers, which was again larger than I was looking for.
The second group of Benjamin domes measures 1.06 inches. While that’s better, I still thought the rifle could do more.
The last pellet I tried was the .25 caliber Predator Polymag. It showed well in the 25-yard test and earned its place in this test. There really aren’t a lot of options when it comes to accurate .25-caliber pellets, and I think we’ve included all of them in this test. Yes, there are other brands out there, but do they perform? In my experience, they don’t.
The Predator is a hollowpoint pellet that has a red plastic tip in the center of the nose. Normally, hollowpoints fall off in accuracy at around 25 yards, but this pellet doesn’t. That tip seems to do its job.
The first group of Predators measures 1.121 inches between centers. Once again, that’s okay for 50 yards, but it’s nothing to scream about. But the second group measures 0.808 inches between centers. That’s what I was looking for! While the Marauder can’t be expected to shoot that well every time, this group proves that it has the potential. And it does it with a pellet that is acknowledged to be a great hunting pellet!
No .25-caliber airgun has ever been as accurate as the best .22 or .177 guns. What we see from this test is a range of results that represents what the .25-caliber Benjamin Marauder can do at 50 yards. I think these groups show what this gun can do very well. Sure, if you shoot more there will be some smaller groups. But there will also be many more groups that are larger than those shown here. I think we can safely say the Marauder in .25 caliber is capable of putting 8 shots into one inch at 50 yards when you do your part.
The .25-caliber rifle uses a lot of air! I was getting just 16 good shots in this test on a 3,000 psi fill. Compare that to the 32 good shots I got in the test of the .177-caliber rifle filled to the same pressure.
From a handling standpoint, there isn’t a nickel’s worth of difference between the .177- and .25-caliber rifles. The trigger can be adjusted to operate virtually the same, and the stocks feel the same. The one small difference is the .25-caliber gun does move back slightly with each shot. I didn’t feel that with the .177, but I definitely felt it in this test.
If you want a .25-caliber hunting air rifle, I think the Marauder is a good candidate for your short list. It’s powerful, accurate, quiet and reliable. How much more can you ask?
by Tom Gaylord, a.k.a. B.B. Pelletier
Today’s report is a guest blog from reader Paul Hudson. It It’s his evaluation of the Crosman 622 repeater.
If you’d like to write a guest post for this blog, please email me.
Over to you, Paul.
The Crosman 622
by Paul Hudson
The Crosman 622 is a rarity — a slide-action CO2 repeater.
The Crosman 622 is a repeating slide-action CO2 pellet rifle. It was produced from 1972 to 1978 in .22 caliber only. It uses the familiar 12-gram Powerlets and has a rotary clip that holds six pellets.
There have been only a few other slide-action repeaters available in the recent past — the Gamo Extreme CO2 and the Shark roundball repeater made in Argentina are two examples. The Gamo uses an 88-gram cartridge, and the Shark is a bulk-fill gun.
This particular 622 belongs to my brother-in-law’s friend. It had not been fired for many years and was in need of a resealing. The old factory lube had turned to hard wax, and several hours of cleaning was required to get everything in working order.
Due to its design, the 622 did not develop a reputation for durability. The valve body is made of two parts held together with a single screw and is prone to breakage. A second bolt or pin can be added to the bottom of the valve body to greatly strengthen the assembly. Another problem was the tendency for the gun to jam with certain pellets; this can happen if the muzzle is elevated when the slide is cycled. Some pellets (depending on their shape) can back out of the clip enough to prevent it from rotating. Keeping the gun pointed down will help prevent this. Possibly due to this problem, Crosman added a lever to the receiver of later 622s to aid removing stuck clips.
There are many parts in the 622′s receiver. The large, rectangular casting on the right is the valve body, and it’s prone to breakage. The probe is near the top of the receiver and is in the rearmost operating position. In the middle is the rotating rod that advances the clip. The large cylinder on the bottom houses the striker.
The 622 is large enough not to feel like a toy. It’s 40.5 inches long with a 13.5-inch length-of-pull, so it’s adult-sized. The blued barrel is 23 inches long, and the gun weighs 6 lbs. without a scope. A square post front sight and a square notch rear sight come from the factory, and they’re entirely suitable for the ranges at which the gun would be used. The painted receiver is made of two die-cast pieces and is grooved for mounting a scope. While the paint isn’t the greatest finish, no complaints can be made about the blueing on the barrel and gas tube. It’s very well done for a low-priced gun. Both the stock and forearm are made of varnished hardwood that has a very straight grain. The receiver is only about an inch thick, and the gun does not feel bulky; combined with the light weight, it’s a perfect plinker and can be carried for hours.
The rear sight is a simple square notch and is adjustable for elevation and windage.
The front sight is a square post. The ramp is textured to prevent glare.
A manual safety is mounted behind the trigger; it’s very similar to the unit on many other Crosman models. The single-stage trigger was a pleasant surprise. It isn’t adjustable…but it’s fairly smooth, mostly creep-free and breaks at a consistent 2 lbs., 2 oz. For an inexpensive airgun, it’s quite good. Holding down the trigger while cycling the action lets the striker travel forward with the slide; it will not fire the gun.
The trigger features Crosman’s typical cross-bolt safety and is surprisingly good.
The rotary clip
The 622′s 6-shot rotary clip is easy to load and fits entirely within the receiver; it will not interfere with a scope or catch on anything during handling. Unfortunately, the clip accepts pellets with a max length of 0.275 inches. This prevents longer domed pellets and pointed pellets from being used. All wadcutters fit, and most cycle fine.
Rear view of the clip. Pellets load easily from this side.
The thin clip will not accept pellets over 0.275 inches long. The Baracuda Hunter is about the longest pellet that fits.
To charge the 622, the end cap of the lower tube is removed. A CO2 cylinder is dropped in nose-first (don’t forget a drop of Pellgunoil on the tip), and the end cap is replaced. As the cap is tightened, a slight hiss will be heard as the cartridge is pierced. Further tightening should not be needed. Since the CO2 cylinder seats against a flexible seal, it should be removed after shooting. A single cylinder was good for 36 shots, or 6 full clips. A two-cylinder lower tube, similar to that of the Crosman 160, was available for a time; but this was an aftermarket part not supplied by Crosman.
A single CO2 cartridge is used in the long gas tube.
The 622 was rated by Crosman at 450 fps; this gun exceeded that rating with all tested pellets. The temperature was around 90 degrees during shooting.
MV=muzzle velocity (fps), ME=muzzle energy (ft-lbs), ES=extreme spread (fps)
Getting the best accuracy from the 622 is a bit of a challenge. The forearm uses a single operating rod and can slightly rotate around the lower tube. This allows the gun to move upon firing if it’s held by the forearm. For best accuracy, support the 622 just ahead of the receiver by holding the gas tube. This is really a minor point; the 622 is not a long-range target gun — it’s a plinker, and one of the most entertaining ones at that.
10-meter groups with open sights
All pellets tested were more than accurate enough at 10 meters for plinking and informal shooting. Groups are 6 shots since that’s the magazine capacity. Here are a few of the best performers:
25-yard groups with a scope
The factory open sights just aren’t precise enough to produce the best accuracy at 25 yards. I mounted a simple 4x Leapers scope for these groups. Most pellets gave groups in the inch to inch-and-a-half range. There were a few standouts, however:
While the 622 isn’t the best engineered or most accurate airgun Crosman ever made, it’s still an interesting piece. There have been only a few slide-action airguns produced; and for plinking, the rapid-firing provided by a slide-action really ups the fun factor.
Many 622s are still in circulation, and they regularly show up at airgun shows and on auction sites. Lack of attention from collectors has kept the price reasonable. One caveat is to make sure the gun includes the clip — they fetch about 25 dollars apiece. It’s possible to load the rifle singly, but it’s tedious.
by Tom Gaylord, a.k.a. B.B. Pelletier
Benjamin Marauder .177 caliber: Part 1
Secrets of loading the Benjamin Marauder magazine
Fixing a Marauder magazine
Benjamin Marauder .25 caliber: Part 1
Benjamin Marauder .25 caliber: Part 2
I told you this report was going to be a different kind of test, and today I’ll prove it. I shot the .25-caliber Benjamin Marauder off a rest at 25 yards, but the purpose was not to learn if the rifle is accurate — I already knew it is. And 25 yards is hardly long enough to show the accuracy potential of this powerful PCP.
No, I told you that I would be searching for the most accurate pellets in this rifle. You see, unlike .177- and .22-caliber guns, the big .25 doesn’t have that many accurate pellets. Going into this test, I only knew of 3 — the H&N Baracuda (also branded as the Beeman Kodiak), the Benjamin dome and the JSB Exact King. Other .25-caliber pellets I’ve tested were not accurate enough to be considered. Today’s test is to establish that the 3 good pellets are still good in this test rifle and to see if there’s another good pellet or 2 out there.
The rifle is now scoped with the UTG 6-24X56 AO scope with illuminated reticle, which I’m also testing for you. I won’t get into that evaluation in this report, but I will use this test to report on that scope. This scope has high rings that come packaged with it.
Testing pellets rapidly
Time is a commodity in short supply around here. It takes a long time to test something, then pictures have to be taken and it takes even more time to write it up. Normally, I shoot 10-shot groups for accuracy, but I told you I was going to do things differently today, and this is where it starts. Instead of shooting 10-shot groups (or 8-shot groups because the .25 Marauder circular magazine only holds 8 pellets), I decided to shoot 4-shot groups. The results of those groups would tell me which pellets were worth testing more closely. But testing more closely won’t be at 25 yards. It will be out at 50 yards.
Since I’d just mounted the scope, I had to sight-in the rifle, and for that I loaded a full magazine with 8 H&N Baracudas. Sight-in took just 2 shots, so the first group for the record was 6 shots instead of 4. As predicted, it was a tight 0.376 inches at 25 yards. Of course, some of that is due to the lesser number of shots, so bear that in mind. Also, bear in mind that a group of .25-caliber pellets will look much larger than the same size group of .177-caliber pellets.
JSB Exact King and Benjamin dome
Next, I shot 4 each of the JSB Exact Kings and Benjamin domes. Both performed exactly as expected. The 4 Benjamin domes went into 0.196 inches. Of course, I would expect this group size to double with 10 pellets, but it’s still the kind of accuracy I was looking for.
I shot the first 3 JSB Exact Kings into a very tight 0.11-inch group, but the fourth shot was a called pull to the left. It opened the group to 0.383 inches; but since I know that I pulled the shot, it doesn’t phase me. This pellet also made the cut for more testing.
Three JSB Exact Kings went into 0.11 inches at 25 yards. That’s the larger hole on the right. A pulled fourth shot that was called opened the group to 0.383 inches, but that doesn’t bother me. This one is a keeper, as well.
The only other pellet that showed promise in this test was the Predator Polymag. Four of them went into 0.274 inches at 25 yards. That’s good enough to earn a chance to shoot at 50 yards in my book.
The other pellets
As I said before, the .25-caliber pellet is not as uniformly accurate as the .177 and .22. Until this test, only the first 3 pellets I shot had shown any promise. Now, we have a fourth. To show you what some other pellets look like in comparison, here are 3 more that didn’t make the cut.
The results of 4 RWS Superdome pellets tell the story of the .25 caliber very well. Four went into a group that measured 1.378 inches between centers. You can clearly see there’s no need to shoot 10 pellets, when just 4 make a showing like this.
Next, I tried the pellet that was the best .25-caliber pellet for many years in the 1990s. Until the H&N Baracuda came out in .25 caliber, the 20-grain Diana Magnum was the pellet people chose for accuracy. Certain individual guns may have done better with other pellets, but the Diana Magnum was considered the best all-around .25-caliber pellet of its day.
Not surprisingly, Diana Magnums turned in the smallest group of the three pellets that were not selected to go on to longer-range testing. Four went into 0.588 inches at 25 yards.
Beeman Ram Jet
Another pellet that has left the stage is the .25-caliber Beeman Ram Jet. It was supposed to be a domed pellet that also performed like a wadcutter, but accuracy was never this pellet’s strong suit. Four of them made a 0.769-inch group at 25 yards.
I hope from these results that it’s clear why I went with 4-shot groups instead of 10-shot groups. I never planned on testing the .25-caliber Marauder at 25 yards, except to prepare for the 50-yard test, which will be next. I think you can see the clear differences between the pellets that were selected and those that missed the cut. More than any other caliber, the big .25 is an all-or-nothing caliber. And there aren’t that many pellets to choose from.
One more thing I want to report today is how the trigger now performs. I adjusted it before this test and got it exactly where I want it. I won’t say that it’s better than the trigger on my .177 Marauder, but it’s just as good. The Marauder trigger is something Crosman can be proud of, for it surpasses most PCP adjustable triggers I’ve tested. This one now has a positive stop at stage 2, followed by a very light, crisp break. It allowed me to hold very precisely and know when I pulled my shots, which only happened once during this session. This trigger will certainly do!
Next, I plan to shoot the rifle at 50 yards with these 4 pellets. That should give us a good idea of the long-range capability of the rifle. If the results suggest it’s capable, I may attempt a 100-yard test, as well. I need for the shooting conditions to be perfect to do it; but if they are, we may see the real potential of the big Marauder.
by Tom Gaylord, a.k.a. B.B. Pelletier
Crosman’s 116 bulk-fill pistol is a .22-caliber single-shot pistol.
Today, we’ll look at the velocity of the Crosman 116 .22-caliber bulk-fill CO2 pistol. A couple things will complicate this test. First is the fact that the pistol has adjustable power. I’ll account for that with several power adjustments, but that isn’t all that’s going on.
The bulk-fill process is itself somewhat complex; because if the bulk tank doesn’t have enough liquid CO2 in it, or if the tank and the gun are both warm, the fill will be less dense and will therefore produce fewer total shots. Let’s look at the fill process before we examine the gun.
The bulk-fill process
Filling an airgun from a bulk tank requires that the filling tank has sufficient liquid CO2 inside to transfer the maximum amount possible to the gun. When I say the maximum amount possible, I mean what’s maximum under safe operating conditions. It’s possible to overfill a CO2 tank or gun and create a dangerous condition.
CO2 pressure is controlled by the ambient temperature rather than by compression. If you make the CO2 storage vessel volume smaller somehow, you don’t compress the gas inside. Instead what happens is more of the gas condenses into liquid. It will continue to do so right up to the point that there’s 100 percent liquid inside the tank.
While that sounds good, it isn’t; because when the liquid inside the tank heats up, it tries to expand into gas again. As long as there’s space inside the tank for the liquid to evaporate into gas, you’re safe; but when the safety volume is filled, all the liquid CO2 can do is increase in pressure. It does so at an astounding rate, quickly developing over 10,000 pounds per square inch at temperatures that are still well within human tolerance. That’s why tanks rated for CO2 storage contain safety burst disks to prevent the tank from becoming a dangerous bomb. It’s also why several airgunners have been startled when their tanks’ burst disks actually burst while stored in their cars on hot days. Once the burst disk ruptures, all gas is lost and the burst disk must be replaced before the tank can be used again.
These days, most airgunners get their bulk tanks filled at paintball stores; but in my day, they filled them at home. There were even larger bulk tanks of CO2, holding 20 pounds of liquid. They came from the food and beverage industry, or they were large fire extinguishers. I own 2 of these 20-lb. CO2 tanks that I use to fill my bulk CO2 tanks for guns.
The 12-oz. paintball tank is coupled to the 20-lb. CO2 tank for filling. This big tank has a siphon tube, so only liquid escapes the valve when it’s in the upright position. Couplings are custom made for this.
Once the smaller bulk tank has been filled, it’s time to fill the gun. Remember, the object is to transfer as much liquid CO2 as possible for a dense fill. That doesn’t give more power — it gives more shots. The CO2 controls the pressure, depending on the ambient temperature.
The 12-oz. paintball tank is then coupled to the CO2 gun like this. With the CO2 tank hanging down, the liquid in the tank is just behind the valve, where it will flow readily from the tank into the gun. This paintball tank has a special adapter with a wheel to control the opening of the valve.
Filling the gun takes just a few seconds. It actually makes a sound, and you can tell when it’s full because the noise of the transfer stops abruptly. The outside of the gun may become cold and wet with condensation when the new CO2 inside evaporates to gas. As long as you do this transfer at room temperature, everything will be safe, for the liquid CO2 will evaporate and stop the fill before the gun accepts too much liquid. The gun is now full and ready to test.
Because the pistol has adjustable power, I tested it on high power first. I found that there were 21 good powerful shots with the gun set on the highest power. Then, I adjusted it to medium power and finally to the lowest power. Medium power was very close to high power in all respects, but on the lowest power the total number of shots per fill increased to 32.
This is a Crosman gun, so Crosman Premier pellets sounded like the best place to begin. On high power, they averaged 390 f.p.s. The range went from a low of 384 to a high of 409 f.p.s. At the average velocity, this pellet generates 4.83 foot-pounds at the muzzle.
On medium power, they weren’t much slower — averaging 386 f.p.s. But on low power, they averaged 331 f.p.s. for an average 3.48 foot-pounds of energy.
Next, I tried RWS Hobby pellets. In .22 caliber, these weigh 11.9 grains and average 423 f.p.s. in the test pistol. That’s a muzzle energy of 4.73 foot-pounds. The low was 413 f.p.s., and the high was 435 f.p.s. On medium power, Hobbys went an average 402 f.p.s.; and on the lowest power, they averaged 369 f.p.s. That’s good for a muzzle energy of 3.60 foot-pounds. On low power, the low velocity was 355; and the high was 383 f.p.s.
The last pellet I tried was the RWS Superdome. This pellet weighs 14.5-grains in .22 caliber and is a favorite among many airgunners for all 3 powerplants. On high power, Superdomes averaged 376 f.p.s. The low was 362, and the high was 391 f.p.s. At the average velocity, Superdomes generated 4.55 foot-pounds. On medium power, they averaged 367 f.p.s.; and on low power, they averaged 345 f.p.s. On low power, the low velocity was 341, and the high was 348 f.p.s. At the average velocity, they generated 3.83 foot-pounds of muzzle energy.
The trigger-pull on the test pistol measures 4 lbs., 2 oz. That’s a little heavy, but it’s very crisp, so it’s going to be okay for target work. There are no provisions for adjustment on this trigger; so if I want to change the pull, I have to do some gunsmithing.
I noted that when the gun was fully charged, the velocity always started lower and climbed into the good range — just like a precharged gun that’s overfilled. On the lowest power, the gun sometimes failed to discharge. CO2 guns aren’t supposed to do that, so I assume either the valve return-spring has weakened over the past 60 years, or someone has been inside the valve and changed things. Either way, that’s a good reason for an overhaul. The transmission sealer worked and now so does the gun; but it doesn’t work exactly as it should. That’s also probably why the number of shots per fill was lower than expected.
To what can I compare this air pistol? How about to a Crosman 2240, which is also a .22-caliber single shot but runs on 12-gram CO2 cartridges, but in many other ways is like the test pistol? The 2240 has a 7.5-inch barrel, so it’s a little faster than this 116 with a 6-inch barrel (Premiers averaging 448 f.p.s. to the 116′s 390 f.p.s.). Its sights are fully adjustable. The grip, while a bit larger, feels very much the same. So, if a 116 and bulk-filling aren’t in your future, know that there’s a good alternative.
I do think the test pistol is shooting a little slow for a 116. Maybe it would be best to get it overhauled to see what one in top condition can do