Wierd Primer issue

[disky1]

hopefully someone can shed some light on this picture it is basically that the firing pin mark is inside out. thanks for your help. fired out of .223 xcr. wondering if something is wrong with ammo or gun. only noticed one like this. but some just went in the garbage

 

[Johnny_Zanni]

Over pressure?

 

[iceman2]

I would say a pretty hot load.

 

[tiriaq]

Every case fired in an XCR that I have seen looks something like that. Apparently its how they are, a unique feature.

 

[disky1]

the rifle cycles fine. and there doesn't seem to be any problem with ejecting cases. some more feedback would be appreciated. does anyone elses xcr do the same thing. ive tried searching and searching the xcr forum. no luck. but i am having troubles describing what is happening to search! thanks for replies thus far.

 

[RockChucker]

How about a weak firing pin spring or an oversized firing pin hole?
The later is most likely.
RC

 

[carbonrod]

Every case fired in an XCR that I have seen looks something like that. Apparently its how they are, a unique feature.

+1

How about a weak firing pin spring or an oversized firing pin hole?
The later is most likely.
RC

+1

The oversized firing pin hole on the XCR has been an issue since day one of the rifles. I dealt with it when the first batch, and have seen it on every new xcr I have seen since. Some do it more, some less, but all of the ones I have seen do it.

In some cases, the firing pin hole is so out of spec that the primers will pierce. Robarm's suggested "solution" in these cases was to take a drill bit, and radius the firing pin hole.

One of the XCR owner's I know went as far as to put a bushing in the firing pin hole to correct the problem.

This is purely a QC issue on Robarm's part IMO. It can be fixed if the owner really wants to. The design issues, such as the single perpendicular bolt holding the barrel in place can not.

 

[disky1]

so... am i going to damage my face? or is it good to go? if it gets worse should i discontinue use? ae tactical doesnt do that all primers look "normal"

 

[carbonrod]

Harder primers will probably help. Def keep an eye out for pierced primers.

 

[Ganderite]

"How about a weak firing pin spring or an oversized firing pin hole?
The later is most likely."

I agree. It is the rifle. Use ammo with harder primers if possible.

 

[Suputin]

Harder primers will probably help. Def keep an eye out for pierced primers.

That is what I'd call an unfortunate choice of words ......

Pierce a primer and you might end up with an eye out. :0

 

[safety first]

sweet pun