What the Hell

[Mikerochburns]

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!

 

[silvershooter589]

I assume the air & ammo came out the business end?

 

[jmohme]

Was there a follow up shot and was it just as loud?




and did you hit the bird?

 

[Mikerochburns]

Was there a follow up shot and was it just as loud?




and did you hit the bird?

Yes several

 

[wildcj5]

Couple silly questions. Did you accidentally load a .22? Possibly not close the breach all the way?

Or blown breach seal.

 

[Mikerochburns]

And yes I hit the bird but did not celebrate the shot. Scared the crap out of me neighbors were out. Do just close garage and went inside lol.

 

[Mikerochburns]

Couple silly questions. Did you accidentally load a .22? Possibly not close the breach all the way?

Or blown breach seal.

No on the .22 checking on the breach seal

 

[MongooseV8]

Did you happen to check your gauges before hand? Maybe you got some reg creep or something making the ammo faster?

 

[Cannonball]

It’s most likely the breech seal.

 

[Mikerochburns]

If I remember right there was an o ring somewear on the inside of this right?

 

[Mikerochburns]

Did you happen to check your gauges before hand? Maybe you got some reg creep or something making the ammo faster?

Yes regs are good.

 

[MongooseV8]

Blurry picture but there should be two, one on either side of the brass transfer port piece.

Edit: and one more tiny one inside the brass transfer port for the probe seal.

 

[Jasonmc]

Blurry picture but there should be two, one on either side of the brass transfer port piece.

Edit: and one more tiny one inside the brass transfer port for the probe seal.

Yes...there is a tiny one inside... Look it over.. sounds like it's gone or torn..

Similar situation once... I was in a hurry to pop a pest... In my haste I didn't close the bolt fully.. when I shot...it was loud.. cocking handle didn't fly open but I noticed it wasn't close fully.. when I shot again to test it.... It was loud! That little o ring was missing!

 

[Mikerochburns]

Blurry picture but there should be two, one on either side of the brass transfer port piece.

Edit: and one more tiny one inside the brass transfer port for the probe seal.

The tiny one inside is the one that's gone . Would that cause the problem

 

[Mikerochburns]

Yes...there is a tiny one inside... Look it over.. sounds like it's gone or torn..

Similar situation once... I was in a hurry to pop a pest... In my haste I didn't close the bolt fully.. when I shot...it was loud.. cocking handle didn't fly open but I noticed it wasn't close fully.. when I shot again to test it.... It was loud! That little o ring was missing!

Yes but I fired it sevral more times after that.

 

[Mikerochburns]

Yes but I fired it sevral more times after that.

Anybody have that little o-ring that goes inside?

 

[elh0102]

What is the size?

 

[MongooseV8]

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 pcs

www.oringsandmore.com

 

[Motorhead]

Projectile likely went supersonic.
Typically done when a high power PCP is shot with a Lighter than tuned for pellet .... CRACK !!!!

 

[elh0102]

Projectile likely went supersonic.
Typically done when a high power PCP is shot with a Lighter than tuned for pellet .... CRACK !!!!

That would require well over 1,000 fps, and I haven't seen any mention of the specific pellet, or the tuning. But you're absolutely correct. A supersonic shot is gonna be loud. A blown breech seal is loud, and seems even louder as it's so close to your ear.