I am loading Lyman 75 gr RN bullets (#311-252) sized to .311 with once fired Starline brass. Essentially what is happening is the bullets are being seated, and slightly deformed by the die, before the bullet seater is even contacting them. It is basically crimping the bullets. Likewise, I am unable to achieve a decent crimp, which is resulting in chambering issues. I did notice that my Starline brass is significantly shorter than my factory once fired PPU brass, which my be effecting this issue.
At this point, my thinking is to seat the bullets without touching the crimp, them following up with a factory crimp die. Am I on the right track? Just wanted to get feedback before buying a crimp die. Thanks guys.