And to think, I hate the damn things... I tend to find one here and there in my container of 45 brass. Drives me nuts when I try to ram a large primer into it, only to realize it's not going to happen. I always toss them as hard as I can into the garbage lol.
I send them to brass heaven with cracked cases and rimfire cases. They should be illegal.
I'm lucky - I have a shooting buddy who trades me large primer for any small I get.....
Like the OP he does not want to change the primer setup in his progressive between 9mm and 45ACP.
For the 3 minutes it takes on my 550 I swap them over.



























