1. Had an old savage double with a weak spring that would sometimes occasionally dent a primer but not enough to actually go bang.

2. Not had this happen to me yet, but guys who shoot milsurp 8mm Mausers say that some surplus Yugoslavian ammo from the 1950s had hard primers that won't fire with weaker firing pin springs. It's not unusual to get misfires and you have to order a new replacement spring.


Though the 8mm surplus seems to have dried up recently, you still run into a box of Yugo here and there, as it was still available only a year or two ago from the suppliers. It's otherwise decent ammo as surplus goes. I have a couple of boxes myself but have never shot it. May not be 1950s, though I suspect it is.

There is some Iranian/Persian 8mm surplus still available but everyone says it's just bad, bad, bad. Hangfires all the the time from the reports.