I used to not crimp and started to check on some things. My groups actually got tighter. Now that is probably attributed to increased pressure, which could be achieved by a little more powder or closser to the lands. Or I just started shooting better.
I was just curious about the compressed load if crimping was more important. With a compressed load, would it make actual bullet seating depth more consistent by the time it is fired and the remaining rounds under recoil in the blind mag. I never noticed consistency issues in my un-crimped that were not compressed.
Edited by 308 Sav - December/13/2010 at 21:09