Hey fellow air gunners. So I woke up today saw a bird sitting right in the perfect spot so ran over and took the shot, holy crap sounded like I fired a .22cal rimfire. I have an fx Mavrick sniper .25 and the Donnie FL moderator. Do you have to repack these or what do you think caused this? Please Help!
What the Hell
- Thread starter Mikerochburns
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Supersonic pellet will get the neighborhood dogs barking and get much attention ... can't say that for a blown breech o-ring 
I don't think so as far as dieseling goes but I could be wrong breech seal is more likely if the handle wasn't all the closed
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I’ve had this happen before, check your breach seal. You wouldn’t believe how loud a PCP is with bad breach seals
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Sorry, I don't have that size. The O Ring Store can help you, a lifetime supply for a few bucks.
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Yep, but noise is a relative thing. My shot-away ears don't hear things that are deafening to my wife. Based on all I've read here, I think it is probably a blown breech seal. But, we all might have different opinions if we actually heard it.Supersonic pellet will get the neighborhood dogs barking and get much attention ... can't say that for a blown breech o-ring
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That was where I was going with my question about allow up shots. High pressure or maybe accidentally loaded some light pellets and supersonic crack!
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Yes, it’s a possibility for sure, we had it happen a couple weeks ago. Both my buddies and my gun, shooting over lubed with Ballistol pellets, had us scratching our heads for a minute.
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By the FX parts list it is O-ring 6,35 x 1,27 NBR 70,
From list look for A-section part 8.11 (.25), FX part no: 2575
Maveric parts list
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That's not a breech seal for .22. 5.5 x 1.5 N70 is the correct one. https://www.globaloring.com. GREAT pricing .03¢ ea. and you can specify the tolerance. You want 1% or zero. The pellet probe is 5.57mm, the i.d. of the o-ring is 5.5 so a tolerance on the minus makes for a leak.I could be wrong but I believe this is the correct size:
Metric Buna O-rings 6.4 x 1.3mm Minimum 25 pcs
13mm ID x 15.6mm OD x 1.3mm CS-Price for 25 pcswww.oringsandmore.com
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By the FX parts list it is O-ring 6,35 x 1,27 NBR 70,
From list look for A-section part 8.11 (.25), FX part no: 2575
Maveric parts list
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If you can't find them anywhere else UTAH Airguns has the FX part in stock.
FX STX Barrel Breech O-rings (Pack of 4) | Utah Airguns
FX Impact Breech O-rings (Pack of 4)
utahairguns.com Upvote 0