Hi all, so I got a new SKS and went out today with it.

I picked up a few different types of ammo for it. Wolf(black box stuff) Wolf Military classic, and Brown Bear.

The Wolf Military, and the Brown Bear shot without issue, and cycled the gun beautifully and ejected the spent cases no problem. The Wolf(black box) on the other hand, gave me a real fight. The gun would lock up tight in the bolt closed position, and I had to literally pry the bolt back with a screw driver the extract the spent case. I could manually load a round, and if I didnt fire it, I could cycle it out with the charging handle by hand no problem. But once fired, fuck me, I'll be damned if I didnt have to pry it open with a screw driver.

Anyone have any issues like this, or is there a fix for it. Obviously I will be avoiding the Wolf ammo and just stick with the Brown Bear, but ideas on why this happened would be appreciated.

Thanks