Norinco 223 - high pressure sign

The very first time I shot one of these rifles, I was surprised at the appearance of the primer. Thought that there was a problem. Turned out that it was made that way deliberately.
 
tiriaq said:
There is a slot in the bolthead for the ejector. You can see the resulting ejector mark on the case beside the 95; directly opposite, the extractor has left its mark near the J.
The primer appearance is the result of the design of the rifle. The ejector and extractor marks are not the results of an over pressure cartridge.
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Looking at the one picture the head looks damaged but the picture underneath of what I assume is the same case, it doesn't look bad. So, because I simply don't have the experience, I shall defer to yours. :cheers:
 
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Same ammo, shot from my T97.

Out of all the ammo types the primers look the worst on the Norinco, but not as pronounced as yours are.

None stick out past the base of the case.
 
Check the fit of the firing pin to the firing pin hole. Sometimes primer metal will flow if the fit is generous.
 
Firing pin is nicely fit, but i have no idea why the hole is chamfered at the bolt face.
In the pics it looks rough, but it is actually smoothly chamfered.
Now with that in mind, this could be not overpressure, but a result of the chamfer as some people as suggesting. Primers are not really smashed flat as they usually are with high pressures.

Hopefully I won't have to buy a new stripped bolt.
 
The firing pin hole was deliberately chamfered during manufacture.
The explanation that I heard was that the chamfering prevents primers from blanking, leaving little discs in the firing pin hole.
 
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tiriaq said:
The firing pin hole was deliberately chamfered during manufacture.
The explanation that I heard was that the chamfering prevents primers from blanking, leaving little discs in the firing pin hole.
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This. Robarms may have directed the previous owner to break the edge of the firing pin whole and the owner bubba'd it like they did with me.

Get a new bolt and enjoy a fine firearm. Newer bolts dont have this problem.

or just keep shooting as it. no damage done.
 
MiniMe said:
XCR bolt

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As pointed out several times "yes" thats normal! A bad batch of bolts were punching primers so they chamfered the hole to cure the problem, result is what you see on your fired primers. Keep shooting it I'd say just keep away from the WW box .223 they warned to not shoot that in the XCR. I researched this alot years ago before I bought my XCR-L.

FYI your bolt looks much better than mine! and i've had no problem with mine. Also a google search or search on XCR forums should come up with much info on the primer cratering issue on the XCR-L if you want more info on it.
 
MiniMe said:
Hi All

I took my XCR to the range this weekend and noticed that the brass was showing signs of high pressure, really high.
To the point that the primer is sticking out.
A buddy shot 5 rounds of my ammo with his 10.5" AR and the primer was very flattened as well and compared to his Norinco ammo that is from an older lot, even the recoil is noticeably more.

My XCR's barrel is stamped 223.
Ammo head stamp is C J 95

What could be the issue here? Ammo out of spec (too hot)?
Should I stop using this ammo in my XCR and stick to my AR for it??

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Thanks!
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looks fine to me, I'll take it of your hands if your worried. :)
 
I have had nothing but problems from the white box norc .223. The 2 cases I had caused similar issue and also had cracks in the side of cases allowing gas to escape. This was in a tavor and 2 ar's
 
MiniMe said:
Sounds good.
I shoot only Norinco ammo, bought over2k rounds in a sale and it was cheaper than buying just the brass.
Once I run out of ammo, I'll reload.
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If you plan on reloading for it just be sure to keep away from the softer primers, I would try to find Milspec hard primers reloading for my XCR and good brass as well, stay away from commercial Federal and Winchester!
 
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