Are the FX .25cal 33.95grain pellets the same as JSB MKI or JSB MKII .25cal?
FX Air Rifle Pellets .25 Cal, 33.95 Grains, Domed
- Thread starter Raider03
- Start date
My understanding is that FX 33.9's are
"the same" as JSB MKII's.
The difference is that FX owns the dies that their pellets are made in. Therefore FX controls how long the dies are used before getting swapped out.
"the same" as JSB MKII's.
The difference is that FX owns the dies that their pellets are made in. Therefore FX controls how long the dies are used before getting swapped out.
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I don't think they are identical but they might be. My P35-25 shoots JSB 33.95 MK II the best of the pellets I've tried. I got a tin of FX 34s to try and they seem to shoot as accurately but not to the exact same point of impact. Maybe 1/4 inch higher and to the right. When I switch tins will I see a similar shift? Possibly. I know about the posting by JSB saying they are the same. But they seem to be a little different. My Avenger in 25 is shooting the 25.39s and again the FX variety shoot a little different from JSBs. In my guns FX pellets shoot the same or a little better than JSBs despite being a little cheaper. Certainly worth a try if your gun likes JSBs.
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Thanks for the info! My Crown shoots the MKII better then MKI. Airgun Depot has the FX version on sale, $13.99 for a 300count tin.
www.airgundepot.com
FX Airguns .25 Cal, 33.95 gr - 300 ct | Airgun Depot
Check out this great deal on the FX Airguns .25 Cal, 33.95 gr - 300 ct. Need advice? Let our airgun specialists help you today!
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As said. Those are same pellets made by JSB. FX brand just use only one die (JSB Kings are from mixed dies) and because of this are probably more consistend.
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What speeds are you all shooting .25 cal 33.95 gr pellets? I got an Alpha Wolf on the way from AoA and I’m curious what speed I should start out with this JSB pellet.
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I am at 865fps. Typically best pellets accuracy is somewhere from 840fps to 880fps. Every gun and barrel is a little different. The faster you shoot, the more likely that wind will destabilize the pellets. Test your best settings for accuracy in zero wind in various wind conditions.
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My P35-25 will only get them up to about 800 fps. I'd try them going faster if it would do it. But 800 fps with great accuracy is pretty nice. I'm hoping to pick up a few fps with warmer weather and possibly with a new barrel that is supposed to be on it's way.
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I don't want to make this too complicated, but there is an upper speed that results in a minimum amount of wind drift. Below that, as you decrease muzzle velocity wind drift will increase. So if your setup is accurate at both 800fps and 850fps. Then 850fps will less sensitive to wind and easier to put on target.
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Just an update here. After much testing/practice, it seems like my .25 Alpha Wolf likes the JSB MKI 33.95 gr pellets @ 920 fps. It seems to group a bit tighter with a 0dB moderator than without. The best I’ve shot is about a 0.5 inch group but most are about a 1-1.25 inch group at 50 yards.
Not as good as the groups some of the competition shooters post on here, but I’ve been pleased with my progress because it started out a lot worse.
Surprisingly, the JSB MKIIs don’t shoot well at all in my gun.
Not as good as the groups some of the competition shooters post on here, but I’ve been pleased with my progress because it started out a lot worse.
Surprisingly, the JSB MKIIs don’t shoot well at all in my gun.
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Right around 900 or just a touch over out of my impact. Fly really well. My understanding is that because of the design of this type of pellet they can maintain stability to a higher velocity than diabolo pellets. I know people shoot them up around 950 with great results.
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Since my comment in January on this thread I weighed partial tins of FX and JSB MK II 34 grain pellets. I was surprised that the weight of the FX was much more consistent than the JSB and much closer to the 34 grain advertised. The JSB had very few pellets as light as 34 grains, most were closer to 35 grain. But, with further testing I have decided my P35-25 likes the MKII JSBs the best. They like what they like...
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I shot my AW at 100 yd, mostly just to try it. It certainly wasn’t precision work, but once I found the DOPE I could easily put pellets inside a 3” bull.
It was funny because I could see the pellet flight through my scope and man I had to lob those SOBs in there, LOL! Was fun.
It was funny because I could see the pellet flight through my scope and man I had to lob those SOBs in there, LOL! Was fun.
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I was surprised at my results because I had heard the MKIIs were better than the MKIs in most guns. So far, my AW likes (in order of best to worst) @ 920 fps:
JSB MKI 33.95
JTS Dead Center 33.80
JSB MKII 33.95
FX 33.95
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For whatever. It was 68whiskey on YouTube that tuned them that way. Those guys know their stuff. I believe Steve from AEAC says more like 920 fps.
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