Bulged cases, 22 wmr

[Rebel_Rider1969]

Shot my Eaa appeal and noticed this. Bulge is 180 degs off of the firing pin strikes. No other issues, fed, ejected and went where aimed. Thoughts? CCI 40GR.

** this may be from me flipping the action to LH or I assembled it improperly. I will pull it apart to clean and look tomorrow. Thanks

 

[Capt. Dave]

Yea, that’s kind of scary looking. Hope you find the issue before a kaboom.

 

[Fodderwing]

Send the pictures to EAA's customer service department.

 

[SAWMAN]

Hesdspace and/or overpressure problem.
22msg brass is about the thinnest and softest there is. Not at all like centerfire.
Kinda amazing that it extracts and cleanly ejects.
Does the buldge go around 360deg ?? ---- SAWMAN
ADDED: I see now - -> 180deg

 

[Raven]

I'd bet it's from flipping it to LH, too

 

[Rebel_Rider1969]

After thinking about it. My theory is the bulge is at the bottom where the feed ramp is. Too weak of a spring, blowback action. Gonna pull it apart later this am.

 

[Rebel_Rider1969]

Hesdspace and/or overpressure problem.
22msg brass is about the thinnest and softest there is. Not at all like centerfire.
Kinda amazing that it extracts and cleanly ejects.
Does the buldge go around 360deg ?? ---- SAWMAN
ADDED: I see now - -> 180deg

It's only bulged on about 45 degs on the case maybe 1/3 or 1/4 of the diameter.

 

[oneshot]

Think you going to find it is the freed ramp , have seen this in a lot of 22mag. and in some 22 lr using the High Pressure 22 ammo. , this what you see in a lot of center fire in what is refed. to as a non supported chamber. Such as the glocks and some others the 45 acp . this why they tell people not to shoot plus P ammo in them. most of the 357 Rifles will do this.. So as long as it will eject. don't worrier about it. Shot it and enjoy it. Just my 5 cents jj

 

[Rebel_Rider1969]

Think you going to find it is the freed ramp , have seen this in a lot of 22mag. and in some 22 lr using the High Pressure 22 ammo. , this what you see in a lot of center fire in what is refed. to as a non supported chamber. Such as the glocks and some others the 45 acp . this why they tell people not to shoot plus P ammo in them. most of the 357 Rifles will do this.. So as long as it will eject. don't worrier about it. Shot it and enjoy it. Just my 5 cents jj

Thanks, I'm betting the spring needs more pressure.

 

[BluesBrother]

That looks similar to a Glock smile which is caused by a chamber not fully supported. Glock does this to facilitate feeding that won't be effected when the bullet is striped out of the magazine than goes up the ramp at an extreme angle to the chamber and finally tips into the unsupported part of the chamber. You said the bulge is 180 from the firing pin strike. The firing pin is at the top? The ramp is than 180 from the firing pin? I may be wrong but the assembly or the charging handle placement has nothing to do with that bulge. IMO Glock hasn't changed their chamber design since first produced in the 1980's. Glocks are still considered one of the more reliable pistols in the world due in no small part to their chamber design.

 

[oneshot]

Think you are going to find more spring pressure will not change it much if any. I'm assume this is a semi auto. This one of the problems with semi 22 mag. That is why there is not many made. Depends of the feed ramp.. how much bulge will be.

 

[Rebel_Rider1969]

Thanks fellas. Pulled it apart. Everything looks good. The bulge is at the feedramp. The firing pin is at the top. Added 2 small washers to the spring rod but no difference, still doing it. Really need to flip it back to right hand and see if it still does it. Maybe someone got lazy machining the cutouts on the barrel, the bolt looks fine- even.

** thought about holding the bolt shut and firing or adding a strong rubber band on the handle just for testing it.

 

[Rebel_Rider1969]

Well I'll give yall a good am laugh. Put a big rubber band on the ch. It looks like it bulged less?? Even with the added "spring", lol it still locked open on the last shot. Spent on left

 

[capt.joe]

Hmm, ive got a 597 magnum. Makes me want to check my casings.

 

[Rebel_Rider1969]

Looked online, it's happened to others this is from 2016. So I guess it's a bug, have to try other rounds in it maybe or just go shoot and not worry about it, like jj suggested.

 

[Rebel_Rider1969]

Hmm, ive got a 597 magnum. Makes me want to check my casings.

That's a good idea, I have the pmr, cmr but have never noticed the cases.

 

[FrankT]

Looked online, it's happened to others this is from 2016. So I guess it's a bug, have to try other rounds in it maybe or just go shoot and not worry about it, like jj suggested.

I would call and see what the manufacturer says about it and possibly send in before having it blow up in my or others face

 

[Rebel_Rider1969]

I would call and see what the manufacturer says about it and possibly send in before having it blow up in my or others face

Yep

 

[Rebel_Rider1969]

Wow, just looked up info on my rifle. Imported 2013...

 

[Raven]

Think you going to find it is the freed ramp , have seen this in a lot of 22mag. and in some 22 lr using the High Pressure 22 ammo. , this what you see in a lot of center fire in what is refed. to as a non supported chamber. Such as the glocks and some others the 45 acp . this why they tell people not to shoot plus P ammo in them. most of the 357 Rifles will do this.. So as long as it will eject. don't worrier about it. Shot it and enjoy it. Just my 5 cents jj

I had an already sporterized Colt 45ACP M1911A1 do this. I got the feed ramp milled to reliably feed hollow points. It left half the case unsupported as it sat in the chamber, but it would feed, fire and eject anything I wanted it to. Bad news was it went from having decent accuracy to having 10" groups at 5 yards.