Question about 7.62x39 PMC brass

[Matt Dillon]

Folks, I have ~15 pieces of PMC 7.62x39 brass, which takes a large rifle primer, but when attempting to reprime this brass, I found that the large rifle primer won't fit. Apparently there is some sort of ring around the primer pocket.
Anyone have any ideas whether this brass is usable or not? The large rifle primer won't fit into the primer pocket, and I was wondering what that little ring was for, and how to get rid of it?

 

[R.W.Dale]

Folks, I have ~15 pieces of PMC 7.62x39 brass, which takes a large pistol primer, but when attempting to reprime this brass, I found that the large rifle primer won't fit. Apparently there is some sort of ring around the primer pocket.
Anyone have any ideas whether this brass is usable or not? The large rifle primer won't fit into the primer pocket, and I was wondering what that little ring was for, and how to get rid of it?

Sounds like a primer crimp. There are quite common on brass cased NATO ammunition. You can get a hand held reamer to cut the crimp ring out to facilitate priming.

You prolly managed to cram a handgun primer in because they're softer than rifle primers. In all likely hood you were pretty close to detonating a primer next to your fingers and face

 

[DBR]

You can use a countersink or case mouth chamfer tool for a few cases. Don't even think about firing a rifle round with a pistol primer. You need a Large Rifle Primer.

Added: If you have all ready succeeded in priming a case with a pistol primer you can fire the primed case (no powder or bullet) and reprime with the correct primer.

 

[Matt Dillon]

I'm sorry, folks, but I meant large rifle primer, not large pistol primer. I use CCI #34 primers for 7.62x39.

 

[jcwit]

Whether or not primers do not detonate from pressure as in attempting to seat they detonate from sharp impact as in a firing pin hitting them.

Why are people so afraid of primers going off, unless the open end would be pointed directlly at someone I fail to see the problem. Its not like their going to explode like a drum of blk powder.
Even then you should be wearing safety glasses while reloading anyway. Just common sense.