Some may call it “pierced primers” but since a hole is getting blown out of the primer, and into the firing pin hole, we call it “popped primers.” This issue seems to be quite prevalent with SKS owners, and with AK owners to some degree, as well. While the problem occurs only with imported “Berdan” primed ammo and not with American, or “Boxer” primed ammo, we’re going to try and address an issue or two that might help SKS owners experience less “popped primer” incidents, whether it’s a Russian, Chinese, Yugo or etc.
At least 99% of the SKS bolts that have been sent in for Firing Pin Kit installation have a raised area around the firing pin hole. 100% of them have a sharp or jagged edge to that hole. Something of a Volcano shape seems to be created especially when it is dry fired. This “Volcano” and sharp or jagged edge needs to be removed, in a safe and careful manner.