He stated he was using PMC. I didn’t think PMC made steel cased ammo.
Me neither, nor do I intend to. I prefer a softer metal wearing against the steel in my firearms.
YMMV.
keep it long enough you will. I see it every week. stuck cases and junior gun plumber bolt destroying techniques. Ther is simply not enough taper to the case in 5.56 for it to be a good candidate for steel cartridges.7.62x39 is fine because of the rapid body taper. The lack of strong primary extraction on stoner rifles is not conducive to steel ammo.
Probably so. If you keep and use anything long enough you'll more than likely have some kind of problem with it. Stuff wears out. When it does, I replace it.
The Colt Gold Cup I have been shooting for 35 years now works better than when new. Although the worn off corners and holster worn metal don't look near as good.
What size is the gas port?
Is the bolt locking back on last round?
What weight buffer are you using?
The answers will help diagnose your problem.
Is the bolt locking back on last round?
What weight buffer are you using?
The answers will help diagnose your problem.
From your description, it could be several things or a combination. The bolt is cycling enough to load the next round, yet not pushing back far enough to engage the bolt hold open on the last round.
Weak ammo
Bad magazines
Lack of lubrication
Under gassed
Bad extractor
Gas rings on the bolt
Loose carrier key
Weak extractor spring
Incorrect buffer weight
Buffer spring is too strong
You just have to work your way through each of the possible causes till it works like it’s supposed to.
Weak ammo
Bad magazines
Lack of lubrication
Under gassed
Bad extractor
Gas rings on the bolt
Loose carrier key
Weak extractor spring
Incorrect buffer weight
Buffer spring is too strong
You just have to work your way through each of the possible causes till it works like it’s supposed to.
Thanks for the responses. I don't shoot steel case ammo, only brass and I'm using brand new Gen 2 Pmags. Swapping out the BCG seemed to fix the problem but I'll keep it well lubed and running quality ammo until it's broke in.
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