Pronlem with ammo

Gibbs505

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I have run accross a problem, about one in ten of the ammo, surplus 7.62x39, doses not go bang. Yet, if I reload said ammo, and shot it again bang, it goes.

This only started after I took the pin assembly apart to make sure it was clead!!

It is a norinco SKS that I have.
 
Welcome to surplus ammo. I purchased a case of 70's vintage that is doing the same thing.

That's a ridiculously high FTF rate and is not typical for this ammo. I've shot cases dated back to 1959 and the majority haven't had even one dud per case.

I have run accross a problem, about one in ten of the ammo, surplus 7.62x39, doses not go bang. Yet, if I reload said ammo, and shot it again bang, it goes.

This only started after I took the pin assembly apart to make sure it was clead!!

It is a norinco SKS that I have.

Check your firing pin/bolt/trigger group over again.

Since the rounds are not duds, there's probably something not right with your rifle.
 
One thing that concerns me is that there is a definite impact mark in the primer. It is quite deep amd makes me think that it is the ammo, not the gun.
 
Right now there is a lot of surplus ammo that is sold that is not sealed in 1120 round lots. This is the ammo I am having problems with. The 90's dated stuff sold sealed 1200 rounds not a problem. The rounds that fail the primer is seated lower in the case.
 
Right now there is a lot of surplus ammo that is sold that is not sealed in 1120 round lots. This is the ammo I am having problems with. The 90's dated stuff sold sealed 1200 rounds not a problem. The rounds that fail the primer is seated lower in the case.

I purchased the 1120 sealed in a case package.
 
I would say its a rifle issue.
Ive had this happen with one of my norinco sks. When the trigger is depressed, it clicks but doesnt seem like a full normal click. Anyways, point being if I recock and load same cartridge, it fires fine.
This carteidge is from sealed 70s vintage, and I doubt its the ammo.
 
Everybody seems to have their own theory, but for me I know it is the ammo.
Do you have any friends that go shooting with you with their SKS's. If so try trading some ammo to see if it makes a difference. Today for me I shot a 100 rounds of 90's vintage ammo without a hickup. Shot the rest of the 70's ammo that I had 60 rounds with 9 FTF the first time, they always fire the second time.
 
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