Thread: Brass deformation - rimmed (303) vs shoulder (308)

it will still seperate in same area(just forward of web) if you use a semi full length eg set die up as per normal but turn die back out 1/2 turn rather than 1/2 turn in try case in rifle and tootoo with amount you set die to you will in effect set up die for your chamber...if its a bit longer the brass will only need to stretch once. Ive heard of guys with possible headspace issues putting a tiny rubber band like ones for teeth braces in front of rim to help hold it back against bolt face for first fireing..