FutureButterBar
Marksman
I have some small pistol magnum primers. I was wondering if they are safe to use for a 40 caliber? I am using a 180 grain lead wadcutter with a No. 5 powder at 5.5 grains (i think, i can't remember off the top of my head). but basically, what happens when you use a magnum primer instead of a regular primer?