jcreek
New member
I know this topic has come up before but I can't seem to find it. On my way to work the other night I stopped to pick up some SP primers. I was in a hurry and didn't realize until I got home the next morning that I had accidentally grabbed magnums. Right now I'm loading 9mm. I know people have said you can use magnum primers in place of regulars I'm just curious as to how drastically it'll change my load before I do. Anybody know? I've been loading pretty light as it is, about a grain below book max.
