I'm new to 9mm reloading, and an overall new reloader (been doing it for less than 2 years). I was using a dummy round to set up seating depth. I plunk tested an uncrimped round in a Kahr CM9 chamber. It dropped in there no problem. I checked the case mouth diameter of the loader dummy round, and it is .378" (my manuals list .380" as standard).
I know I've got the expander die set for a very light bell, and I'm not shaving bullets when I seat them.
My understanding is that the "crimp" for calibers that space off the case mouth is only to remove the bell created to facilitate bullet seating. If my case mouth is already about where you want it,is there any reason that I should crimp?
I know I've got the expander die set for a very light bell, and I'm not shaving bullets when I seat them.
My understanding is that the "crimp" for calibers that space off the case mouth is only to remove the bell created to facilitate bullet seating. If my case mouth is already about where you want it,is there any reason that I should crimp?