Posts Tagged ‘Crosman Premier heavy pellets’
by Tom Gaylord, a.k.a. B.B. Pelletier
Today, we’ll look at the accuracy of the Air Arms TX200 Mark III at 50 yards. I can tell you that I learned a lot from this test. But that will all be summarized as we go. Let’s get started!
I shot the new TX directly off the same sandbag that was used at 25 yards. As you remember, I showed (after much coaxing from you readers!) that the TX shoots as well or better when rested directly on sandbags as it does with an artillery hold. The bag was crossways to the rifle, so the contact with the stock was minimized.
The day was perfect for the test. Not a breath of wind the entire time I was on the line!
The rifle is mounted with the AirForce 4-16X50 scope, which was selected so I could conduct another test for reader Duskwight after the regular test was completed. This scope is clear and sharp; and at 50 yards, I was able to bisect the small bullseyes with the reticle.
The rifle was still zeroed for 25 yards, so it had to be adjusted for 50 yards before anything else could happen. The first shot landed 3-1/4 inches low and 1-1/2 inches to the left. It then took another 2 shots before I was reasonable on the target. Then, I fired the first group with H&N Baracuda Match pellets. Ten landed in a group measuring 1.562 inches. It’s a fairly round group, but not as small as I would like from this rifle. So, I switched pellets.
JSB Exact Monsters
Next I tried some JSB Exact Monsters, which weigh 13.4 grains in .177 caliber. They went all over the place. When I went dowrange to retrieve the target, I saw that they were tumbling or yawing. They must be too heavy for the velocity the TX is able to generate.
Crosman Premier heavy
The third pellet I tried was the Crosman Premier heavy. I meant to bring Crosman Premier lites, but I grabbed the wrong box when loading up for the range. Fortunately, the heavy pellet was wonderful! Ten of them gave me a group that measured 0.658 inches between centers — or about as good as a top-flight PCP can do at the same distance! This is phenomenal accuracy for any air rifle at 50 yards!
First lesson learned
The new TX200 Mark III is every bit as accurate as my TX that’s well broken-in. No accuracy has been lost over the years, and the rifle can shoot this well right out of the box!
With lesson one under my belt, I adjusted the scope to lower the point of impact and moved to the next bull. The first shot landed where the last group was, then the pellets moved to the new sight adjustment.
Second lesson learned
Some scopes have stiction. After adjusting them, it’s best to shoot a couple shots to vibrate the reticle to its new location. I knew that, but made the mistake anyway. So, I’ve included the first shot, along with the group, to show you what it looks like. If this group had been as small as the one before, that first shot would really stand out. But I lost my concentration on this one and wasn’t holding the rifle as softly as I might have. This group of 10 measures 1.435 inches between centers, which isn’t that far from the first group of H&N Baracudas!
The second group of Premier heavies opened to 1.435 inches. That’s more than double the size of the first group! Top hole to the left of the pellet was the first shot, which I disregarded, after the scope was adjusted.
Third lesson learned
While a rifle may be capable of shooting 10-shot 50-yard groups smaller than one inch, it may not do it every time! That small group may represent what the rifle is capable of, but not what it will always do.
Duskwight, our blog reader from Moscow, asked me to test the difference between a rifle shot with a low-power scope and the same rifle shot with a high-power scope. In other words, does magnification improve a rifle’s ability to group?
Well, common sense tells us that it does. Right? I mean, surely, if you’re able to parse the target to a finer degree, you must be able to group your shots closer together. Right? That’s what this test will determine.
That’s why I used a 4-16x scope on this rifle. I’d been shooting with 16x to this point, so now I dialed the power back to 4x and shot another group.
Wow! At 4x, the intersection of the crosshairs almost completely covers the small bullseye at 50 yards. As I shoot, I’m almost certain how this test is going to turn out. And it does. Ten shots on 4x with the same Premier heavy pellets landed in 2.208 inches. Looks like I was right about what low magnification would do.
The third group of Premier heavies — shot with the scope set to 4x — was 2.208 inches between centers at 50 yards. That’s quite a difference from the previous group, even though that group was already admittedly large.
But something nagged me about this group. I knew in my heart that I’d not given the rifle my best. I knew this group was going to be bigger than the last one while I was shooting it, so I was even sloppier with my hold.
It probably sounds like I need medication to suppress my dual personalities while at the range, but I assure you I’m not talking to myself — at least not loud enough for others to hear. What I’m doing is a little soul searching while I’m still out at the range and have the time to do something about it.
I adjusted the scope back to 16x and shot another 50-yard group. This time, I did everything the way I should have. The hold was completely relaxed. I fully expected to be rewarded with another of those sub-inch groups, but that didn’t happen. This time, I shot a 10-shot group measuring 1.935 inches between centers. Oh, well! I was probably tiring out from all the concentration.
Fourth lesson learned
Sometimes, you just can’t will the results to happen the way you would like. I put my whole heart into this group, and this is what I got. Maybe that’s what it feels like to be 66, dried-out and ready for the old-folks home!
Fifth lesson learned
I called that first great group of Premiers a screamer. Now you see why that is.
Nevertheless, I owed it to Duskwight to try the rifle on low scope magnification one more time, and this time to do my very best. So I did. This time, 10 pellets went into a group that measures 1.481 inches between centers. That’s right, it’s SMALLER than the group shot on 16 power! I noticed that the bull was just visible behind the crosshairs; and if I really tried, I could hold on the target in exactly the same way every time. Apparently, I did, because this group fired on 4x is smaller than the previous group that was fired on 16x.
Sixth lesson learned
Although it isn’t conclusive, it looks like you can shoot just as accurately on low scope magnification as you can on high magnification if you take the time to do things right.
Seventh lesson learned
Looking at both groups fired on 16x and both groups fired on 4x, it sure looks like the point of impact never changed! Some of you have asked about that in the past. The design of the scope determines whether the impact point will move when the scope’s power is changed, but these days a lot of variable scopes stay right where they were when the power’s adjusted.
Eighth lesson learned
Of the five groups fired with Premier heavy pellets on this day, only one is smaller than one inch. And it’s significantly smaller! When you see those great groups in the future, you must ask yourselves what the rest of the groups look like.
Ninth lesson learned
I may be old and dried-out, but I can still shoot — a little. I get tired as the shot count increases, so that needs to be factored in to my tests from now on.
I’m very pleased with what this new TX200 Mark III has done so far. I think the rumors that the TX quality may have slipped are just that — rumors! Individual guns may have problems; but overall, the TX200 is one fine air rifle. Next, I plan on mounting a red dot sight and testing it for accuracy, again, to see what the differences are.
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
I’m writing this extensive report to fully explore the fabulous Air Arms TX200 Mark III, which is without a doubt one of the finest spring-piston air rifles in the world! The good news is that it’s still available today. The better news is that it’s everything it’s cracked up to be! Writers have a few trite phrases to convey quality in the airgun world. “As good as a TX 200″ is one of them, and it’s very high praise.
There are 9 links above that will take you all the way back to the beginning, when I started by testing my own well-broken-in TX 200. But now I’ve shifted over to a brand-new rifle that Pyramyd Air sent to me to test. Some readers wondered if my rifle, which is so well-used that it might be performing above the bar, so to speak, because of the use it’s had. They wanted to see a rifle that’s being made today, and also one without all the wear on the parts. That’s what we’re testing now — a brand-new TX whose only shots are the ones you have witnessed on this blog.
The TX has no sights and must be either scoped or have some other kind of optical sight mounted. One of the tests we’re going to do with this rifle is to mount a red dot on it and see what that does for it. Blog reader Mannish from Mumbai asked for that test a long time back.
We’re also going to test the effects of shooting the gun at 4X and again at 16X with the same scope. Reader Duskwight asked for that — to see if the increased magnification would affect the group size. I also want to see if changing the magnification changes the point of impact, so that test will be a twofer.
I’m leading up to the scope I chose for this test. I might have selected the same Hawke 4.5-14X42 Tactical Sidewinder that was on my TX when I tested it, but that didn’t give me all the magnification I wanted for Duskwight’s test. So, I selected a vintage AirForce 4-16X50 scope, instead. Mine is older than the model being sold today, but the specifications are essentially the same. For a mount, I selected a nondescript 1-piece mount. I chose it because it has a vertical scope stop pin for the TX scope stop holes, plus it has the height needed for the scope’s objective bell to clear the spring tube. I have no idea who made it.
I started sighting-in at 12 feet, putting 3 pellets into the target and adjusting until they were in line with the center of the bull, more or less. They were high, so I cranked down about 4 complete turns on the elevation knob, knowing that back at 25 yards the gun would be shooting higher than at 12 feet.
When I shot the first pellet at 25 yards, it was still about 1.5 inches high, so a couple more turns down on the elevation knob brought it to the center of the bull. As always, I tried to intentionally keep the pellets from striking the center of the bull, as that erases my aim point very quickly. The sight-in was now complete with about 7 shots being expended.
All of today’s shooting is at 25 yards, which is really close for a TX. I rested the rifle directly on my sandbag, with the bag turned sideways, so the rested area touched about 5 inches of the forearm. I used an ultra-light hold, and the groups showed the results. I selected a couple pellets that had done well in the test of my personal TX and one that had never been tested for accuracy before.
H&N Baracuda Match
The first pellet was the one I used to sight-in the rifle — the H&N Baracuda Match. It was landing to the left of the aim point and in the center of the bull for elevation. Ten shots landed in a group that measures 0.417 inches between the centers of the 2 pellets farthest apart. That’s well within the range fired by my personal TX at 25 yards.
JSB Exact RS
Next, I tried a pellet I haven’t tried for accuracy in the TX — at least not that I can remember. The JSB Exact RS dome is a very lightweight pellet for a rifle this powerful. The first shot landed about 1.5 inches above the spot where the Baracudas were hitting, but it was still on paper, so I continued to shoot. Each shot that followed seemed to drop a bit lower on the paper, and as I was shooting I discovered something important. The rifle shoots this pellet very well, but it is extremely hold-sensitive. Moving the rifle a quarter-inch on the sandbag makes a tremendous difference. So, I was able to adjust the hold carefully and get the pellets to land closer together.
I think the RS pellet can be made to shoot, but it isn’t worth the effort when there are other pellets that shoot even better without all the fuss. The 10-shot group I got measures 1.501 inches between centers, which is terrible; but 6 of those pellets were the ones I took special pains to hold exactly the same, and they measure just 0.496 inches between centers. That’s the potential of this pellet when you handle the gun like it’s a soap bubble!
Crosman Premier heavy
The last pellet I tested was the Crosman Premier heavy. The group was a phenomenal 0.333 inches between centers! That’s slightly better than the best group I shot with my own TX at 25 yards, but the difference is only 3 one-thousandths of an inch and could easily be hidden by an error in measurement. So, the 2 rifles are equivalent.
I could have shot other pellets and shown you more targets, but by now you’re getting the picture. The new TX is the same as it has always been — one of the finest and most accurate air rifles on the market.
Next, I’ll test this rifle at 50 yards. I’ll do essentially the same test that I did with my own TX at that distance, but then I’ll add the 4-16X test. That will tell us if there’s an advantage to more magnification, and it will also show if the point of impact changes as the magnification changes.
After that test, I plan on mounting a red dot sight on this rifle and testing it at 25 and 50 yards. I think that will end the test of this rifle, unless something else comes up.
by Tom Gaylord, a.k.a. B.B. Pelletier
Today, we’ll look at the first of 2 accuracy tests planned for the Crosman MTR77NP scoped air rifle. As you know, this rifle has no open sights; so, the first thing I did was mount the Centerpoint 4X32 scope that’s included with the gun. That went quick because the scope caps have 2 screws each, but there was no slippage of the scope in the rings during this test.
The scope is very bright as you would expect a 4X scope to be, but at the 10-meter distance I shot in this test, it was fuzzy. The parallax is fixed for a further distance that isn’t indicated on the scope. I can tell from examination that it’s set farther than 25 yards.
I’m testing at 10 meters today and will take the best pellets into the next test, which will be at 25 yards. The first pellet up was the 7.9-grain Crosman Premier. You will remember from the velocity test that the test rifle shoots considerably slower than its advertised velocity of 1,000 f.p.s. with lead pellets. It went an average of 866 f.p.s. with 7-grain RWS Hobbys.
I discovered that the rifle is shooting low, even with the scope adjusted up high. For the next test, I’ll shim the rear scope ring. That should raise the pellet up far enough.
Crosman Premier lites
At 10 meters, 10 Premier lite pellets made a group that measures 0.721 inches between centers. The group has a main group of 8 pellets within it and 2 flyers, though there were no shots that were pulled. This is a case where a better scope might do better on target because the image was so fuzzy that I might have been off the aim point by 1/8 inch at times.
The MTR77NP fires with a solid thump. There’s no vibration, and the shot cycle is very quick. The recoil through the butt isn’t sharp the way it is on many gas-spring air rifles. And the A2 stock seems to be ideal for handling the recoil of this rifle without stinging your cheek.
Now that I’ve shot the gun for accuracy, I can tell you the trigger-pull is very long in stage 2. The pull length of stage 2 is supposed to be adjustable, but I turned in the screw about 7 full turns and nothing changed. It feels like a placebo screw; or if it does adjust anything, the effect is very small.
H&N Baracuda Match
The next pellet I tested was the heavy H&N Baracuda Match. This pellet showed some promise in the velocity test, and I thought it might do well in this rifle. Ten of them went into a group that measured 0.982 inches between centers. Like the Premier lite, there were flyers outside the main group, though I did not see them when shooting. I’m beginning to think that the next test needs to be conducted with a different scope.
The scope mounts had loosened by this point in the test. The rings remained tight, but the screws that attach the rings to the base on the rifle loosened up. I tightened them and also checked them after every 5 shots from this point on.
Next, I tried 10 RWS Hobby pellets. They went much lower and also to the left. They actually missed the target paper. The group was round and measured 0.826 inches between centers.
Crosman SSP Hollowpoint
I did check the Crosman SSP hollowpoint that was the lead-free pellet I tested in the velocity test, but after 2 pellets missed the target backer altogether, I stopped shooting. Not the pellet for this rifle.
JSB Exact Express
The last pellet I tested was the 7.87-grain JSB Exact Express dome. I haven’t had much luck with this pellet in the past, but I keep trying it just in case. Alas, the MTR77NP doesn’t like it, either. Ten pellets went into a vertical 1.661 inches at 10 meters. Another pellet to not use in this rifle.
Evaluation so far
I like the way the rifle feels when it fires. It has good power and a solid thump when it fires. The trigger-pull is long but not too creepy.
The scope leaves a lot to be desired. I think I’ll replace it with a Bug Buster 3-9X scope for the next test, and I’ll shim the rear scope ring before mounting it on the rifle. That should give the rifle the best chance to do well at 25 yards.
Obviously, the pellets to try are the Crosman Premier lite, the H&N Baracuda and the RWS Hobby. The Hobbys will be at their maximum recommended distance, but they may surprise us.
If you like black rifles and have been considering the MTR77NP, I think it’s worth a look. We’ll know better after the next test.
by Tom Gaylord, a.k.a. B.B. Pelletier
Today, we’ll test the velocity of the .177-caliber Crosman MTR77NP scoped air rifle. This rifle has a Nitro Piston, which is Crosman’s gas spring, so it should be interesting. The advertised velocity is 1,200 f.p.s., which we must assume is with a lightweight, lead-free pellet.
Blog reader John asked me if the front sight base is on tight or does if it rotates around the barrel. The one on this rifle is firmly in place, but I thought it would be good to show you how the front sight base is attached to the rifle. It’s part of a synthetic sleeve that goes over the end of the barrel, and I assume it’s held in place by epoxy. That would be the most cost-effective method of doing it. John mentioned the possibility of a splined barrel and jacket, but that has a number of problems. It involves extra manufacturing steps (the cutting of the splines); plus, it runs the risk of being installed in a not-perfectly-straight orientation that would cause a lot of problems with sales and returns. Epoxy has none of those problems and costs very little.
The advertised cocking effort is 45 lbs. The test rifle cocks with 42 lbs. of effort as measured on my bathroom scale.
Crosman Premier heavy
The first pellet I tested was the 10.5-grain Crosman Premier heavy. Because this rifle comes in .177 caliber, I had a choice between these and the lighter 7.9-grain Premier lites. I chose the heavier pellets because of the rifle’s power potential; but as you’ll now see, that wasn’t necessary.
Premier heavys averaged 675 f.p.s. through this rifle. The first measured shot from the gun went 705 f.p.s.; but after that, nothing went faster than 681 f.p.s. with this pellet. I threw out the first shot and ran the string from the second shot forward. The high was 681 f.p.s., which happened at the beginning and near the end of the string. The low was 665 f.p.s on the final shot. The spread of shots in this string is 16 f.p.s. At the average velocity, this pellet produces 10.63 foot-pounds of muzzle energy.
Next, I tested the RWS Hobby pellet that’s used for all legitimate velocity comparisons. It’s not a super-lightweight pellet and is made of pure lead, so the lubricity in the bore is what you want in a diabolo pellet. In the test rifle, Hobbys averaged 866 f.p.s., which is a good velocity for accuracy but a little slow for a rifle that hopes to see 1,200 f.p.s. with super-lightweight pellets.
The spread for this pellet ranged from a low of 856 to a high of 872 f.p.s., for a spread of 16 f.p.s. At the average velocity, Hobbys produced 11.66 foot-pounds of energy.
I tested the H&N Baracuda Match next. Normally, a rifle shooting this slow would be considered too weak for Baracudas, but I thought their all-lead content might speed them ahead of the Premier Heavys that are hardened with antimony. And it did! In spite of being 1.15 grains heavier than the Premiers, Baracuda Match pellets averaged 685 f.p.s., which is 10 f.p.s. faster. The range went from 677 to 692 f.p.s., for a total spread of 14 f.p.s.
I think this pellet might surprise us with its accuracy. I certainly intend to include it in the test.
Crosman SSP hollowpoint
The final pellet I tested was the lead-free, super-lightweight Crosman SSP hollowpoint. If anything is going to go 1,200 f.p.s in this rifle, it’s this 4-grain pellet.
They averaged 1094 f.p.s. in the test rifle, but the velocity spread was huge! The slowest pellet went 1018 f.p.s., while the fastest went 1142 f.p.s. That’s a spread of 124 f.p.s. After seeing how this pellet did for accuracy in the Fusion, I’m temped not to test it in the MTR77NP; but if I do a 10-meter test to start with, I could risk it.
Now that I’ve had some more time to assess it, I can make a better report on the MTR77NP’s trigger. It’s a 2-stage pull that feels more like a single-stage pull that has some slack before it engages. Stage 2 is very long and has some creep, but not a lot. For you newer readers, trigger travel is when you can feel the blade move and creep is when it stops and starts (is gritty or jerky) throughout the movement. Movement by itself isn’t bad; but with too much creep, you never know what’s happening. The MTR77NP trigger is not too creepy for good trigger control.
Evaluation thus far
I remain optimistic about the MTR77NP. I like the fact that the velocity is not over the top. Perhaps that explains the slightly easier cocking effort of the test rifle. Whatever it is, it fits my idea of what an air rifle should be.
I’m not a fan of gas springs, but there have been a couple I really liked. The Benjamin Legacy and the Benjamin Trail NP with lower velocity are 2 rifles that satisfied my criterion for what a decent air rifle should have and be able to do. Will the NTR77NP follow in their footsteps? We shall see.
by Tom Gaylord, a.k.a. B.B. Pelletier
Yesterday, I shot the TX200 Mark III at 25 yards and discovered that it can shoot accurately when rested directly on a sandbag. Today, I’ll take the rifle to the range and shoot it again at 50 yards.
I decided to continue shooting with the rifle rested directly on the bag because it seems to work well, and also because I haven’t settled down yet. The bag-rested results should be a fair representation of what the rifle can do.
The day was dead calm throughout the test. Conditions were perfect for the rifle to do its best. But the results were most interesting and not what I expected.
H&N Baracuda Match
You will recall that, yesterday, I got the rifle sighted-in with the point of impact hitting about quarter-inch high and a half-inch to the left of the aim point. I left the scope setting where it was, so you could see what happened out at 50 yards. I’m shooting with the same H&N Baracuda Match pellets that were used yesterday.
Ten H&N Baracuda Match pellets didn’t do very well at 50 yards. Yes, there’s the one pellet off to the left, but there are 3 more to the right of the main group. Group measures 2.2 inches between centers, with 9 pellets going into 1.199 inches.
The new point of impact (center of the group) is about 2-1/2 inches low and 1 inch to the left. This pellet dropped 2-3/4 inches, going from 25 yards out to 50 yards. The group is pretty large, measuring 2.2 inches between centers. It was shot 2 that strayed over to the left. The other 9 pellets are in 1.199 inches, or about one inch less. That’s still on the large side.
JSB Exact Heavy
Next up were JSB Exact Heavy pellets. They weigh 10.3 grains and are often the most accurate pellets in premium airguns. They certainly were this day, as the first 10 turned in a group measuring 1.042 inches. It was the best group of the day.
The other 2 groups I shot with the JSB Exact Heavy pellets were larger. One measured 1.289 inches, and the other measured 1.66 inches. I did adjust the scope between groups, but I was careful never to hit the aim point of the target bull.
The second group of JSB Exacts measures 1.289 inches between centers.
The third group of JSB Exacts measures 1.66 inches between centers.
Crosman Premier Heavy
Seeing that I’d given the JSB Heavys a fair chance, I then shot a group of 10.5-grain Crosman Premier Heavys. They made a 10-shot group measuring 1.365 inches between centers. Since its size is about in the middle of the 3 JSB groups, I think it’s safe to say this pellet is about as accurate as the JSB Exact Heavy. I’m not making any claims, though, because I don’t think I’ve done the TX200 Mark III justice in this test.
The bottom line is that I’m not satisfied with these test results. I’ve seen this rifle do better, and I believe it still can — I just need to change something. I’ve never before shot a spring rifle directly off a sandbag at 50 yards, but I don’t think that’s the problem. I think I was using the wrong pellets.
Remember at the beginning that I told you how far the group dropped when I went out to 50 yards with the 25-yard zero? I also shot the TX200 at 100 yards on this day. I didn’t shoot an entire group, just 3 JSB Exact Heavy pellets. I used the 50-yard zero after adjusting the scope at the range. The 3 pellets went into about 6 inches, but what’s really interesting is the fact that they struck the target more than 2 FEET below the aim point. Don’t let anyone kid you that shooting at 100 yards is simply double shooting at 50 yards. The transition out to 100 yards is very dramatic! I did this just as an aside to see what would happen. Well, I saw all right!
I also think by shooting only heavy pellets on this day that I hindered the TX200′s chances to shine. I want to rerun this 50-yard test with some lighter pellets that are known to be accurate. Someone asked me about that already, and I think it needs to be tested.
Finally, blog reader Tunnel Engineer asked me to try resting the TX on the sandbag close to the triggerguard and again out at the cocking slot. He wanted me to compare group sizes and point of impact with the 2 balance points. But the bag I use is very long and runs all the way from the triggerguard to the cocking slot, so I don’t see how I can do that.
by Tom Gaylord, a.k.a. B.B. Pelletier
Today, I’ll begin a look at accuracy for the Benjamin Marauder precharged pneumatic air rifle. If the Marauder was a normal PCP, this would be one quick report, but it isn’t. The owner has the ability to change not only the rifle’s power, but also the fill pressure the reservoir will accept. That makes testing a Marauder potentially complex if you want to try everything, and we certainly do want to do that here. So, today will just be a first look at potential accuracy, after which I’ll determine the shot count the rifle now gets with the best pellet, and then tune it to a preselected optimum range and test it again to see if the shot count increases. Neat, huh?
I know I’m going to shoot this rifle a lot, so I selected one of the best scopes I have — a CenterPoint 8-32x with parallax adjustment. The scope I chose is an old one from the time when Centerpoint was having Leapers make all their scopes. It’s no longer available, but a close equivalent would be this UTG scope.
Where to begin the test
Oh, boy, where do I start? I thought it would be good to test a number of premium pellets and try to find 1 or 2 that stand out for accuracy. Then, I’ll concentrate on those pellets, which will help me focus on what has to be done.
I shot at 25 yards indoors because that’s the distance at which things start to happen. If a pellet is going to be accurate, 25 yards is usually far enough for it to stand out.
This is one time where 5-shot groups come in handy. I decided to shoot all the pellets I’d selected in 5-shot groups and see if 1 or more of them stood out as exceptionally accurate. Five-shot groups save time, pellets and air; and when you’re faced with testing 8 different pellets, as I was, it makes a big difference.
If there was no favorite pellet, I would just have to pick a couple pellets and proceed to work with them. But as it turned out, this rifle does have a favorite. When I show you how much better it is than the others, you will probably say what my wife, Edith said when she saw the groups. She couldn’t believe that 1 pellet was so much better than all the rest, and exclaimed, “Woohoo,” involuntarily.
Marauder’s noise level
But before I get to that, when I walked into her office to show her the groups, Edith asked me what airgun I was testing because she couldn’t hear it. She thought it was some low-powered air pistol. And our female cat, who normally runs around the house complaining whenever I shoot, slept through the whole session. As it stands right now, the Marauder I’m testing is about as loud as a politician volunteering to do something proactive in a non-election year.
I selected the following pellets to test:
I did sight-in the rifle, but not so it would hit the center of the target because that would destroy the aim point. Nevertheless, a couple pellets did do just that. Fortunately, it was at the end of the 5 shots and no harm was done.
The Marauder is accurate no matter what pellets it shoots. It’s better with some pellets than others. Take a look at some of the 5-shot groups.
Okay, I could live with the JSB Monster group, and there were a couple other pellets worthy of further examination if that was the best the Marauder was going to do. But it wasn’t. When I shot 5 Crosman Premier lites, the whole test changed.
It should be obvious that Crosman Premier lites are the best pellet of those tested. On the basis of the 5-shot group, they’re twice as accurate as the next best pellet. Now, it was time to shoot a 10-shot group with them and see where that took us.
Obviously the 5-shot group was no fluke. This rifle really likes this pellet.
Where do we go from here? First, I’m going to fill the rifle again to 3,000 psi and shoot nothing but Premier lites to determine the total shot count with the gun as it’s currently tuned. You may remember that we found this rifle was tuned to the max when we did the velocity test in Part 2. While that high speed obviously doesn’t hurt the accuracy of the Premier lite pellet, wouldn’t it be nice to get several extra shots from a fill and keep the same accuracy? The rifle currently shoots Premier lites at an average 1,015 f.p.s., and I think an average 900 f.p.s. will be just as good. That’s where I’ll be adjusting the rifle. Several of you have asked how the power is adjusted on the Marauder, so this will give me the opportunity to show how it’s done.
Then, I’ll count the total number of shots at that new velocity, and we’ll see what reducing the velocity gains, if anything. I’ll also test the accuracy at the new lower velocity to see if the rifle is still just as accurate.
After that, I plan to adjust the maximum fill pressure of the rifle. I’ll experiment with the rifle operating at a lower fill pressure while still getting the same velocity. This will be at the new velocity of around 900 f.p.s. We’ll see what benefits there are to having a lower fill pressure.
I do plan on shooting the Marauder at 50 yards, too, but that will come after all the adjustments have been made and evaluated. By then, we should know the test rifle very well and be able to tune it for the best performance. There’s a lot more in store for this rifle!