TargetTerror
Member
I reloaded 100 rounds of 38 special this afternoon on my Dillon 550, with Lee Dies. The COL varied throughout the entire batch by +-.05 inches. I'm using the Lee seater die backed out so that all the crimping is done by the Lee crimp die. Bullets were Zero 125 gr JSP.
I've also had a problem on the same press with 9mm (Lee dies as well). COL will slowly creep up, and I'll end with a longer COL than I started with. Its done this with various bullets.
So, 1. Why would it be doing this? 2. Should I care? I know pressure can change dramatically with changes in COL with 9mm, but would this really matter with 38 special?
I've also had a problem on the same press with 9mm (Lee dies as well). COL will slowly creep up, and I'll end with a longer COL than I started with. Its done this with various bullets.
So, 1. Why would it be doing this? 2. Should I care? I know pressure can change dramatically with changes in COL with 9mm, but would this really matter with 38 special?