Re: Learning and sizing the 300 Rum down to 7 Rum!!
I have just discovered something some of you may already know or have figured out.
I was begining to size down my new Fed 300 Rum brass when I saw it was creating terrible amounts of runout in the neck ( I was using a Redding neck die with expander ball )( visual when rolling on the bench )
I started experimenting and found if I necked it down and just started the expander ball into the neck and went back up and sized it back down then the necks would come out straight everytime as if the slight starting helped align it or something! [img]/ubbthreads/images/graemlins/smile.gif[/img]
It's new to me but some of you more experienced folks may have seen it. Tell me your experiences if you have and any tips or other things to look out for.
Guns and ammo, what more do we need?