Posts Tagged ‘JSB Diabolo Exact Heavy pellets’

TX200 Mark III: Part 5

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

Part 1
Part 2
Part 3
Part 4

TX 200 Mark III
BB’s TX200 Mark III.

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.

TX 200 Mark III H&N Baracuda Match group 50 yards

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.

TX 200 Mark III JSB Exact Heavy group 1 50 yards
Ten JSB Exact Heavys made this 1.042-inch group.

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.

TX 200 Mark III JSB Exact Heavy group 2 50 yards

 The second group of JSB Exacts measures 1.289 inches between centers.


TX 200 Mark III JSB Exact Heavy group 3 50 yards

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.

TX 200 Mark III Premier Heavy group 50 yards
Ten Crosman Premier Heavys made this 1.365-inch group at 50 yards. That puts them on par with the JSBs.

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.

Some observations
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.

Benjamin Marauder PCP .177-caliber air rifle: Part 3

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

Part 1
Part 2
Secrets of loading the Benjamin Marauder magazine

Benjamin Marauder
Benjamin Marauder

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.

Pellets tested
I selected the following pellets to test:

Crosman Premier 10.5-grain
Crosman Premier 7.9-grain
JSB Exact Heavy (10.34 grain)
JSB Exact RS
RWS Superdome
Beeman Kodiak
JSB Exact Monster
JSB Exact Express

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.

Average groups
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.

Benjamin Marauder 5 shots 25 tards Superdomes
Five RWS Superdomes made this 0.528-inch group at 25 yards.

Benjamin Marauder 5 shots 25 tards JSB Exact Heavy
Five 10.3-grain JSB Exact Heavys made this 0.376-inch group at 25 yards. It’s better than the Superdomes, but still not great.

Benjamin Marauder 5 shots 25 tards JSB Exact Monster
Five JSB Exact Monsters made this 0.316-inch group at 25 yards. It’s the second-best 5-shot group of the test.

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.

Benjamin Marauder 5 shots 25 tards Crosman Premier lite
Five Crosman Premier lites made this 0.139-inch group at 25 yards. It is hands-down the best 5-shot group of the test.

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.

Benjamin Marauder 10 shots 25 tards Crosman Premier lite
Ten Crosman Premier lites made this 0.285-inch group at 25 yards. This is exactly what I was looking for.

Obviously the 5-shot group was no fluke. This rifle really likes this pellet.

What’s next?
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!

Benjamin Marauder PCP .177-caliber air rifle: Part 2

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

Part 1

Benjamin Marauder
Benjamin Marauder

This is a look back at an air rifle that has become iconic throughout the world — the Benjamin Marauder. The last time I looked at this rifle, I did it in my conventional way. This time I’m doing it different because I know more about the rifle.

My goal this time is to tune the Marauder exactly as I want it to shoot. I think there will be a great benefit for those who want to learn about PCPs to watch this as it develops. Today, I’ll test the rifle for velocity in the conventional way, except I won’t do a shot count — not today.

In the next report, I’ll test the rifle for accuracy at 25 yards, only I’ll stack the deck by selecting the pellets that I believe will be the most accurate. The accuracy test will tell me which one(s) to select. After that, I’ll test that one pellet for velocity and for the total shot count I can get.

Then, I’ll decide what I want that pellet to do. If it’s a heavyweight, I’ll try for moderate velocity in the 850 f.p.s. range and then try to get the greatest number of shots from it. If it’s a medium or lightweight pellet, I’ll probably dial the velocity back to about 900 f.p.s. and try for the best shot count.

I’ll also be interested in the fill pressure. If I can get 25 good shots with 2,500 psi air, I won’t care that 3,000 psi air gives me 31 good shots with the same pellet. But if 3,000 psi gives me 38 good shots compared to 25 good shots with 2,500 psi, then, yes, I’m going to set the gun up to fill to 3,000 psi.

As I do all of this experimentation, I’m going to document it so those who have questions about the Marauder can see how it works. You tell people today that an air rifle has adjustable velocity, and they expect to see a rheostat on the side of the stock; but the Marauder isn’t like that. It’s a thinking man’s airgun. You set it and forget it. You don’t keep fiddling with the controls until it’s a jumbled mess. We’re going to spend the time to learn how to do it right.

But wait…there’s more! Not only does the Marauder allow you to adjust the velocity of the pellet, it also lets you adjust the maximum fill pressure of the air reservoir. When you hear that, you probably wonder why anyone would bother with a fill pressure other than the maximum — which in the case of the Marauder is 3,000 psi. Here’s why they do it. Some owners may use hand pumps that they find difficult to use above 2,500 psi. Other owners may use scuba tanks, but they live 40 miles from the dive shop and want to be able to use their rifle for a longer time than conventional wisdom permits. For these owners, adjusting the maximum fill pressure to 2,500 psi makes perfect sense. They understand that they’ll get fewer shots at maximum velocity when the fill pressure is lower — just as you understand that you can’t go as far on a gallon of gas as you can when the tank is full, but you can go just as fast.

When you’re adjusting the velocity and the maximum fill pressure, you have to find a balance point between the two. That’s what’s confused many people. The Marauder is the first air rifle in the world to allow both the fill pressure and the velocity to be adjusted. It’s like they’ve given you your very own NASCAR engine, and it’s up to you to tune it for the race track you’re going to drive on.

One pellet is all I want
I don’t care to discover 27 different pellets for this rifle. I only want the single best one. I don’t care how much it costs — only how accurate it is and how effective (power and shot count) I can make it. So, that’ll take some time to locate and some more time to set up the gun to use that single pellet most effectively.

That’s what I intend doing. The first step is to test the rifle for velocity now. I plan to test the following pellets:

Crosman Premier 10.5-grain (Premier heavy)
Crosman Premier 7.9-grain (Premier lite)
JSB Exact Heavy (10.34 grain)
JSB Exact RS
RWS Superdome
Beeman Kodiak

I may not have included your favorite .177 pellet on my list, but allow me to explain my thinking. First, all of these pellets are domes. I know the domed pellet to be the most accurate pellet shape on the market. And each of the pellets I selected to test are known by me to be very accurate.

I selected the Beeman Kodiak, but I’ve found that the Beeman Kodiak Match, H&N Barauda and H&N Baracuda Match are all the same pellet, as far as performance goes. I use them interchangeably, so I only have to test one to know how all four perform.

There may be other pellets that are better in the Marauder; but starting from zero, these pellets are the ones I would choose. Let’s see how they do.

Crosman Premier heavy
Crosman Premier heavies averaged 943 f.p.s. with a spread that went from 941 to 945 f.p.s. That’s right — only 4 f.p.s. separated the fastest and slowest shots! At the average velocity, this pellet makes 20.74 foot-pounds of energy at the muzzle.

Crosman Premier lite
Crosman Premier lites averaged 1,015 f.p.s. The low was 1,012 f.p.s. The high was 1,018 f.p.s., so 7 f.p.s. was the total velocity spread. At the average velocity, this pellet produces 18.08 foot-pounds of energy at the muzzle.

JSB Exact Heavy
JSB Exact Heavy pellets averaged 936 f.p.s. The low was 932 f.p.s. and the high was 940 f.p.s. The total spread is 8 f.p.s. At the average velocity, this pellet produces 20.12 foot-pounds of muzzle energy.

JSB Exact RS
JSB Exact RS pellets averaged 1,032 f.p.s. The spread went from a low of 1025 f.p.s. to a high of 1039, so a total spread of 14 f.p.s. At the average velocity, this pellet makes 17.34 foot-pounds of energy at the muzzle.

RWS Superdome
Of all the pellets tested, RWS Superdomes were the most difficult to load into the magazine. I had to use a pusher to get almost every pellet into the mag. They averaged 1,014 f.p.s. and went from a low of 1,008 f.p.s. to a high of 1017 f.p.s. Total spread was 9 f.p.s. At the average velocity, this pellet produced 18.95 foot-pounds of energy at the muzzle.

Beeman Kodiak
Beeman Kodiaks averaged 957 f.p.s. in the Marauder. The high was 960 f.p.s and the low was 955 f.p.s., so the spread was 5 f.p.s. Kodiaks produced an average 21.66 foot-pounds of muzzle energy.

Where are we?
I just dumped that data on you so I could get to this discussion. What do these numbers tell us? They tell me my rifle is set up extra-hot. I have no need for all that speed; so after I find the right pellet, I plan to dial back the power to between 850 and 900 f.p.s. If the best pellet is light, I’ll let it go toward the 900 f.p.s. side of that range. If it’s a heavy one, I will try to get it down to around 850 f.p.s.

Why would I do that? To get additional shots per fill. The way the rifle is now set up, I’m wasting air. Not that too much air blows out with every shot, but I just don’t need these pellets to go so fast, to do what I want them to.

Did you notice?
I was impressed by how tight the shot strings were. Remember, the Marauder doesn’t have a regulator. It’s doing all this with just a well-balanced valve. We’ll want to keep that in mind when it comes time to make adjustments.

The magazine is superior!
There have been a lot of negative comments on the Marauder’s spring-loaded magazine. I can shed some light on that. I’ve watched some new owners who were befuddled by how this magazine works, and they ruined it by forcing it when it didn’t do what they expected it to. My magazines are several years old and with hundreds of shots run through each of them. I’ve never had a single problem. But force them even one time to do what they weren’t designed to do, and you’ll ruin them. This mag is a copy of a successful UK PCP magazine, and that one had the same learning curve problems.

Silent operation
My test Marauder is very quiet! Even operating at the high power level it’s at right now, it’s extremely quiet. I don’t know if it’ll get even quieter when I cut the power, but I do plan on observing and reporting.

More about the stock
The Marauder stock is not as clunky as people say. In fact, the pistol grip is thinner and narrower than most UK PCP stocks. The forearm is wide, but only enough to contain the large reservoir.

The trigger
I’m ambivalent about adjusting the trigger because the one on my rifle is so sweet that I don’t want it to change. It’s exactly where I want it to be. Theoretically, I can always adjust it back, but I’ve seen too many instances where the theory didn’t pan out.

The 2-stage trigger breaks at less than 11 oz. The first stage is 9 of those ounces, so the release is very light and glass-rod crisp. Only the addition of an overtravel stop would make it better.

So far
I knew what the Marauder was like before this test began. That’s why I’m testing it the way I am. I get to learn something new, and people who are interested in the Marauder get to see it in a way they probably haven’t seen anywhere else. I think the Marauder is a classic for all time, but you have to decide that for yourselves.

Walther LGV Olympia field test: Part 4

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

Part 1
Part 2
Part 3

by Tom Gaylord, a.k.a. B.B. Pelletier  <a href=
Walther LGV Olympia was a top-quality 10-meter target rifle in the 1970s.

The weather cooperated yesterday and gave me a perfect day at the range, so I was able to shoot the Walther LGV Olympia at 50 yards. I also shot the Talon SS with the 1:22″ twist barrel before the wind kicked up and stopped all airgun shooting, so I’m on the way to the final test of the different twist rates.

I knew the LGV Olympia was never going to hit the target no matter what I did to the rear sight, so I placed two 3-inch bulls on a 2×4 piece of target paper and used them for sighting. The shots landed far below these bulls, of course. How far is an eye-opener. I took a picture so you could see.

Walther LGV Olympia 50-yard groups
The pellets landed about 18 inches below the aim point at 50 yards. The sights had the pellets hitting the center of the target at 25 yards, so this is how far they drop in the second 25 yards. Notice that the center of the group of JSB Exact Jumbos on the right is about 2 inches lower than the center of the RWS Superdomes on the left.

I fully expected this to happen, so I stapled the bullseye targets to a huge piece of target paper so the pellet holes would show. Knowing they could well go to the same point, I used two separate bullseyes as aim points; and from the picture, you can see that was a good idea.

I selected the two best pellets from the 25-yard test for this. They were the JSB Exact Heavy, which was the best pellet at 25 yards, and the RWS Superdome that took second place.

I shot off a sandbag with the rifle rested on the flat of my hand in the classic artillery hold. The flight time of both pellets was extreme. Although I couldn’t see them in flight, the flight time told me they were dropping rapidly as they moved downrange.

JSB Exact Heavy
The first pellet I tried was the 10.34-grain JSB Exact Heavy. It’s by far too heavy for the LGV Olympia powerplant; but in the 25-yard test, 10 Exact Jumbos went into a group that measures 0.354 inches between centers. A novice might expect that, since the range was doubled, the group size would be as well. That would give us something like a 0.70-inch group for this pellet.

Walther LGV Olympia air rifle with JSB Exact Heavy pellets
The 50-yard group was larger than expected. Ten JSB Exact heavys went into 2.285 inches.

What I actually got was 2.285 inches between the centers of the two pellets that were farthest apart. That’s roughly 6 times larger than the 25-yard group and more than 3 times the expected size if you simply tried to extrapolate straight from 25 yards to 50 yards. This is why you have to be careful when making generalizations about accuracy.

The shooting conditions were perfect for this test. There was no breeze to speak of; and if I felt something, I always waited it out. I also had no shots that were called as anything but perfect. What you see here represents the best I was able to do with the LGV Olympia at 50 yards with this JSB pellet.

RWS Superdome
The second-best pellet at 25 yards was the RWS Superdome, which gave me a 10-shot group measuring 0.695 inches. Multiply that by 6, and you’ll get an anticipated group size of 4.17 inches. I’m doing that because of what happened with the JSB Exact Jumbos.

Walther LGV Olympia air rifle with RWS Superdome pellets
RWS Superdomes opened up even more than JSB Exact Jumbos. This group measures 3.062 inches between centers.

What Superdomes actually did was put 10 shots into 3.062 inches, so it was better than predicted (if you use the 6x predictor) but certainly much larger than simply double the 25-yard group size.

The lesson here is that group size does not simply increase linearly with distance. We hear that all the time. If a certain gun shoots 1-inch at 100 yards, we say it should shoot 2 inches at 200 yards. I’m saying that rarely happens. The group usually opens faster as the distance increases. Not always, but usually.

The Walther LGV Olympia is a remarkable airgun. Out to 25 yards, it’s extremely accurate, plus it’s very easy to cock and quiet to shoot.

Beyond 25 yards, though, the LGV Olympia quickly gets outside its comfort zone. There just isn’t enough power pushing the pellet to hold the group size to what you might expect.

These results are consistent with the results I got when shooting the FWB 300S at 50 yards. Installing a scope helped in that test, but only marginally. So, I’m not going to put a scope on this rifle. I’m satisfied and that’s as far as I’m going to test this rifle in a field setting.

Walther LGV Olympia field test: Part 3

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

Part 1
Part 2

Walther LGV Olympia
Walther LGV Olympia was a top-quality 10-meter target rifle from the 1970s.

It’s play time again, today, for this is the day we shoot the Walther LGV Olympia target rifle at 25 yards in preparation for shooting it at 50 yards. This report is a look at the vintage Walther LGV platform as a sporter, rather than the 10-meter target rifle that it is. With Walther bringing out the new LGV models, I thought it would be nice to see how the original LGV did in the same test.

I have no idea which pellet to choose for shooting at 25 yards — to say nothing of shooting twice as far. So, today’s test was nothing beyond my best guess of what might work well. Because I’ll be shooting at a fairly long range with this relatively low-powered spring rifle, I knew the pellets had to be domes. Wadcutters start to fall off in accuracy after 25 yards, and pointed ones aren’t that accurate to begin with. But good domes can be as accurate as good wadcutters, and they hold their accuracy a heck of a lot longer.

I’m shooting 10-shot groups off a rest at 25 yards, using the target sights that belong on the rifle. Ten shots should show which pellet or pellets are the best. I’ll also try each pellet seated flush and seated deep, so there will be 2 groups shot with each pellet.

JSB Exact Express
The JSB Exact Express pellet is a fairly lightweight domed lead pellet that’s new to me. I tried it in the velocity test for the first time and learned that flush-seated pellets leave the muzzle faster than deep-seated pellets. That was the reverse of what 2 other pellets did in that test.

The first 10 shots were with flush-seated pellets. They made a group that measures 0.657 inches between centers; but within that group, there are 8 shots in a 0.257-inch group. What can we say about that? There were no called fliers, and I feel the 2 shots that strayed from the main group did so on their own, without the rifle contributing. I’m looking at the entire group size and ignoring the smaller group-within-a-group. However, this pellet does merit another chance at 50 yards.

JSB Exact Express group 25 yards flush-seated
Ten JSB Exact Express pellets seated flush went into 0.657 inches, but 8 of them made a 0.257-inch group. Maybe I should try this pellet at 50 yards.

Next, I shot another 10 JSB Exact Express pellets, only these were seated deep with the Air Venturi Pellet Pen and Seater. This time, the group measured 0.778 inches, and you can clearly see the dispersion of the shots. Deep-seating does not suit this pellet.

JSB Exact Express group 25 yards deep-seated
You don’t have to use calipers to see that this group of 10 JSB Exact Express pellets that were seated deep are scattered all over the place. Group size is 0.778 inches.

RWS Superdome
The next pellet I tried was the RWS Superdome, which so many shooters love. I had no idea how Superdomes would do in the LGV Olympia, and this test would be the way to find out. First, I shot them seated flush. Ten pellets made a group that measures 0.695 inches between centers. The group was fairly round, which I took to be a good thing, because it means the pellets are fairly evenly distributed.

RWS Superpoint group 25 yards deep-seated
Ten flush-seated RWS Superdomes went into 0.695 inches at 25 yards.

Next, I shot 10 Superdomes seated deep in the rifling. This time, the group wasn’t as pretty, but it did measure only 0.649 inches, which is slightly better than the flush-seated group. It’s a toss-up between the different seating methods, though deep-seating does seem a trifle better. Perhaps the difference would be greater at 50 yards.

RWS Superpoint group 25 yards deep-seated
Superdomes seated deep made the better group by a small margin. Ten went into 0.649 inches.

JSB Exact Heavy
The final pellet I tested in the LGV Olympia was the JSB Exact Heavy that I included in the velocity test. We wouldn’t normally select a 10.34-grain pellet for a rifle of the LGV’s limited power; but when you shoot out to long distances, the weight of the pellet is more important than its starting velocity.

The first group was shot with the pellets seated flush. It measures 0.354 inches, making it the best group thus far. This group is also very round, which is another point in its favor. I think I’ve found the best pellet to shoot in this rifle at 50 yards!

JSB Exact Heavy group 25 yards flush-seated
Ten JSB Exact Heavy pellets seated flush made this remarkable 0.354-inch group at 25 yards.

I now wondered if could this get any better. The next 10 pellets were shot deep-seated and, alas, the answer was…no. I’d gone as far as I was going in this test. Ten deep-seated Express pellets made a 0.79-inch group.

JSB Exact Heavy group 25 yards deep-seated
When seated deep, the Heavy pellets opened up to a 0.79-inch group at 25 yards. There’s one pellet hole above the main group that may be hard to see, but it’s there.

So, here at the end of the test we have a very clear example of one seating method triumphing over the other. The Express pellets wants to be seated flush in this rifle.

We also have a clear example of one pellet standing apart from the others. The flush-seated Express pellet made a group that was significantly smaller than all the other pellets I tried. That doesn’t mean it’s the best pellet in the LGV — just the best of these 3 that I tested. When I go to the 50-yard range, I need a day with zero wind — and I’ll try the JSB Exact Express first.

Considerable drop
You may have noticed that the groups were all below the bullseye. That was with the rear sight cranked up pretty high. There’s still some room for more height; but at 50 yards, I know the gun will be printing its groups low. I’ll have to compensate for that.

Walther 1250 Dominator PCP air rifle: Part 4

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

Part 1
Part 2
Part 3

Walther 1250 Dominator
Walther 1250 Dominator.

Today, we’ll test the Walther 1250 Dominator at 50 yards. I had to go out to the rifle range for this test, and we’ve been having some winds lately, so it took some time before I got a calm day. But this day was perfectly calm — I couldn’t have asked for a better day to shoot an air rifle at long range.

As you recall, the Dominator takes a 300-bar fill, which is 4,350 psi. I had to delay the test to get my carbon fiber tank refilled, and even then I didn’t have enough air for a full fill. When you fill a tank, it gets warm; and when it cools back down, you lose several hundred psi. I was able to fill to about 4,100 psi this time, but that single fill was enough air to last for the entire test, which was about 50 shots. And the needle in the pressure gauge is still in the green, which means there are more full-power shots remaining in the rifle.

I normally shoot from one of two mechanical rifle rests when I’m at this range, but for this test I decided to use my long sandbag, instead. The rifle lays in the crease on top of the bag and doesn’t move. There’s also more flexibility to reposition the rifle when required. Since this is a repeater that has to be reloaded, this flexibility was a good.

Since the circular clip holds 8 pellets, I decided to shoot 8-shot groups. It’s too much trouble to load just two pellets by themselves. So, all the groups seen today are 8-shots.

RWS Superdomes
The first pellet was the venerable RWS Superdome. They landed close enough to the bull that I didn’t bother to adjust the scope. Eight pellets made a group that measures 2.017 inches between centers. The pellets spread out horizontally, but there was no wind whatsoever. I don’t think this pellet is suited to the rifle.

Walther 1250 Dominator RWS Superdome group
Ten RWS Superdomes went into 2.017 inches at 50 yards.

Following this, I adjusted the scope up and to the left just a little to compensate for where the Superdomes had landed. Then, I shot a group of JSB Exact Heavy pellets.

JSB Exact Heavy
I expected the JSB Exact Heavy dome pellet to give good groups, and it did — sort of. Seven of the 8 pellets landed in a group that measures 0.753 inches between centers. But 1 shot landed apart from the group, opening it up to 1.933 inches. This shot was somewhere in the middle of the string of 8. It wasn’t the first or last shot, and there was no called flier. It’s just somewhere in the string.

When something like this happens, I’m tempted to believe that it was caused by a defective pellet or by something just as obviously wrong. I think the JSB Exact Heavy is a good pellet for this rifle.

Walther 1250 Dominator JSB Exact Heavy group
Seven JSB Exact Heavies went into 0.753 inches, but an unexplained lone shot strayed higher to increase the group size to 1.933 inches.

Beeman Devastator
I probably shouldn’t have tried Beeman Devastators because they’re essentially wadcutters in profile, and wadcutters don’t do well at long distances. But I did try them, and they strung vertically into a group that measures 3.067 inches. Obviously, they’re a non-starter for this rifle at 50 yards.

Walther 1250 Dominator Beeman Devastator group
Eight shots in 3.067 inches. Beeman Devastators were not too good. Sorry for the lines, but the Devastators overlapped another group and I had to mark them both to keep them separated.

JSB Exact RS
Next, I shot a group of JSB Exact RS domes. As light as they are, I wouldn’t normally recommend them for a precharged rifle of the Dominator’s power but had them along, so why not? Eight went into 0.945 inches, so I’m glad I tried them. This was the smallest group of the test. I do want to emphasize that the day was calm, because these light pellets do get blown around a lot.

Walther 1250 Dominator JSB Exact RS group
Eight shots in 0.945 inches. JSB Exact RS pellets were the best of the test.

Crosman Premier 10.5-grain
Next up were the heavy Crosman Premier 10.5-grain pellets. I expected them to do well in this rifle, and they didn’t disappoint. Eight went into a group measuring 1.19 inches between centers. While that number sounds a little large, look at the group it represents. It’s a little vertical, but it’s not a bad group.

Walther 1250 Dominator Crosman Premier Heavy group
Eight shots in 1.19 inches. Crosman Premier heavies were in the running.

Crosman Premier 7.9-grain
The last group I shot was with the 7.9-grain Crosman Premier lite. Eight of them made a group measuring 1.371 inches. That’s a little large when there are other pellets that are better, but it’s not a bad showing for 8 shots at 50 yards

Walther 1250 Dominator Crosman Premier Lite group
Eight shots went into 1.371 inches. Given the other good pellets, Premier lites are probably not the pellet of choice, but this isn’t bad.

The bottom line
I was glad to finally have the chance to test the Walther 1250 Dominator. It was a good rifle, overall, but I took exception to removing the air tank to fill it, the high fill pressure and the discharge noise.

However, out at the range, the rifle was much quieter — far quieter than a rimfire. Also, the trigger that I complained about when shooting indoors was actually no problem outside. I don’t know what the difference was, except that it was a different day and I saw things differently. I must say, there are a lot of very powerful shots in the tank once you get it up to pressure.

I did get used to fiddling with the bolt handle, and the rifle fed without a problem during this test. Installing the rotary clip is easier than on most other PCP rifles.

I would have to say that the 1250 Dominator is a fine precharged air rifle, but it runs into a lot of stiff competition. Buyers will get it because they like the overall styling, the all-weather materials it is made from and the high shot count.

Walther LGV Olympia field test: Part 2

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

Part 1

Walther LGV Olympia
Walther LGV Olympia was a top-quality 10 meter target rifle from the 1970s.

Don’t get confused. The title of this blog is the Walther LGV Olympia field test, but the first part was titled, We interrupt our regular program….I used that title so I wouldn’t give away the topic that first day. This report is, indeed, about the Walther LGV Olympia of history, but this is a new take on it. I already reported on it two and a half years ago, but that report was about the rifle as a vintage 10-meter target rifle, which at that time was all the LGV had ever been. Only in 2012, when Walther brought out their new line of sporting rifles under the LGV model name, was the LGV anything except a breakbarrel target rifle.

We’ve now looked at the .177-caliber Walther LGV Master Ultra rifle and also at the .22-caliber LGV Challenger (which I now own), so I thought it might be nice to see how the original LGV stacks up to these new rifles. This test will look at the vintage LGV Olympia at 25 yards and at 50 yards. At both distances, I’ll use the rifle’s target sights. I mentioned last time that when I tested the FWB 300S at 50 yards, it didn’t seem to matter that much whether target sights or a scope was used, so I see no need to switch the sights on this rifle.

One thing I have learned in the two and a half years since testing the LGV target rifle is how deep-seating the pellet often has a dramatic affect on accuracy. We have seen that with other airguns, but this will be the first time I think I’ve tested it on a vintage target rifle. This should be an interesting test. And, because the LGV is a breakbarrel, it plays right into the test plan, because breakbarrels are the easiest type of guns in which to seat the pellets deep.

Naturally, I’ll use the Air Venturi Pellet Pen and PellSet seater to seat the pellets. It’s so easy; because once you set the optimum seating depth, it never changes until you change it. If you don’t have a tool, you can seat pellets with a ballpoint pen…but the seating depth is not adjustable.

Today, we’re just going to see how well the rifle performs with some sample pellets that might get chosen for the 25-yard test. I’ll test the velocity of all pellets both seated flush with the end of the barrel and also seated deep. That will be a good comparison.

JSB Exact Heavy
You must wonder if I’ve lost my mind, testing the 10.34-grain JSB Exact Heavy domed pellet in a rifle this weak. No, that’s one of the types of pellets I expect might do well at 50 yards. It certainly has the capability to buck the wind, so I thought it might be a good one to test. I have almost no experience shooting airguns of this low power level out to 50 yards, so this is just a hunch.

JSB Exact Heavys averaged 500 f.p.s when seated flush with the breech. The low was 499 f.p.s., and the high was 501 f.p.s., so there was a total variation of just 2 f.p.s. That’s remarkable for a spring-piston air rifle — I don’t care what type it is! This pellet generates 5.74 foot-pounds of muzzle energy.

When seated deep, the same pellet averaged 511 f.p.s., with a low of 509 f.p.s. and a high of 512 f.p.s. The spread opened up to 3 f.p.s., which is still astonishing. Deep-seated pellets averaged 11 f.p.s. faster than flush-seated pellets. The average muzzle energy was 6.0 foot-pounds.

RWS Superdome
The second pellet I tested was the ever-popular RWS Superdome. This is another pellet that I believe might do well at long range when fired from this air rifle. When seated flush, they averaged 552 f.p.s., with a 17 f.p.s. velocity spread from 543 f.p.s. to 560 f.p.s. The average muzzle energy this pellet generated when seated flush was 5.62 foot-pounds.

When seated deep, the average velocity increased by 10 f.p.s. to 562 f.p.s. The spread ranged from 557 to 565 f.p.s., so it tightened up to just 8 f.p.s. The average muzzle energy was 5.82 foot-pounds.

Beeman Kodiak
Next, I tested the Beeman Kodiak pellet. This is another heavy pellet that I plan to try at 25 yards; and if it does well there, at 50 yards, too. At 10.65 grains, this is the heaviest pellet in today’s test. When they were seated flush, Kodiaks averaged 483 f.p.s. in the LGV Olympia. The spread went from a low of 478 f.p.s. to a high of 487 f.p.s., so 9 f.p.s. in total. That’s still pretty tight. The average energy was 5.52 foot-pounds.

When seated deep, the average velocity for Kodiaks increased to 501 f.p.s. The spread now went from a low of 479 f.p.s. to a high of 515 f.p.s., so a total of 36 f.p.s., which is on the high side. The average muzzle energy was 5.94 foot-pounds.

JSB Exact Express
The JSB Exact Express pellet is one I haven’t tried before. It’s a dome that weighs 7.87 grains. Normally, I would try the JSB Exact RS pellet in a rifle like this; but when I tested it in the past as a 10-meter rifle, I did try the RS pellets and they didn’t seem to do very well at 10 meters. So, I welcomed the opportunity to include this new JSB dome in the test.

Although it’s heavier than the RS, this Express pellet is still the lightest pellet I tried in this test. When seated flush, it averaged 585 f.p.s., with a spread from 569 to a high of 593 f.p.s. The average muzzle energy was 5.98 foot-pounds.

Of course, I expected this pellet to go even faster when seated deep, but it didn’t. In fact the relationship between deep-seating and velocity turned around 180 degrees with this pellet. The average for deep-seated Express pellets was 547 f.p.s., with a range that went from 545 to 553 f.p.s. The average muzzle energy was 5.23 foot-pounds. So, just like we have seen in some tests of deep-seated pellets in the past, here’s another surprise. I wonder what will happen in the accuracy test?

The Walther LGV Olympia has an adjustable 2-stage match trigger. The one on my rifle is set very nicely, and stage 2 breaks at 10.5 to 11 oz. I can do very fine work with a good trigger like this.

Impressions thus far
I was surprised by how consistent the rifle is with JSB pellets. The fact that 3 pellets increased when seated deep, while one decreased, is also something curious. It just points out the need to test a gun in as many ways as you can think of, I guess.

Best of all, this test gives me one more opportunity to shoot and handle this rifle. I own many nice airguns, but my work doesn’t often afford the chance to play with them; so, tests like this one are a refreshing change for me. And I know that many of you get enjoyment from reading about a fine vintage airgun. It’s a nice change of pace.

I do hope the newer readers will see how nice these older airguns are and maybe use the links to explore them more thoroughly. If you’re new to the shooting sports, this is where a lot of the fun is found.

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