I have 2 AR15's in 7.62x39. Well, actually I have 3 but haven't fired on yet. The 2 in question are both NEA uppers, one has a NEA lower and one a Norinco lower. There have successfully fired about 3000 rounds each without a hiccup. Maybe more. I assume they are using the NEA x39 specific firing pin. Anyway, they have been essentially trouble free.
Today I open up a new batch of ammo and get 5 rounds (out of about 60) that the primers don't ignite when hit. I look at the primers, they look like solid strikes. This happened with both rifles.
I reload the magazine with them and this time they all ignited. So the primers weren't duds, they are either really, really hard or seated too high and the first strike is seating them properly and then the second strike is actually crushing the cup to the anvil.
I've been handloading for 25 years, so I pick up a handful of the ammunition and look at the primers, expecting to see high primers possibly, but they look good. It was getting cold and dark so I didn't look at too many but will do so. Now, the obvious answer is to not use this ammunition, but let's not go there for now....what about replacing the hammer springs with stronger ones? Anyone think that would work?
I'm going to take an SKS and Type 81 next time and try those out, too.
Today I open up a new batch of ammo and get 5 rounds (out of about 60) that the primers don't ignite when hit. I look at the primers, they look like solid strikes. This happened with both rifles.
I reload the magazine with them and this time they all ignited. So the primers weren't duds, they are either really, really hard or seated too high and the first strike is seating them properly and then the second strike is actually crushing the cup to the anvil.
I've been handloading for 25 years, so I pick up a handful of the ammunition and look at the primers, expecting to see high primers possibly, but they look good. It was getting cold and dark so I didn't look at too many but will do so. Now, the obvious answer is to not use this ammunition, but let's not go there for now....what about replacing the hammer springs with stronger ones? Anyone think that would work?
I'm going to take an SKS and Type 81 next time and try those out, too.
