I just fireformed 40 pieces of 30BR brass. I use an old 6ppc barrel. I ran a .300 reamer down the bore about 3". This allowed me to run my 30BR reamer into the 6mm barrel. I rebated the rims on my 6BR Lapua brass inorder that it would work with my ppc bolt face. I load mine to the top of the shoulder with Bullseye and use wax to plug the neck. I fireform and then turn the necks. I can now see that I can use about any size barrel as a fireforming barrel. JUST DO NOT USE A BULLET WHILE DOING IT THIS WAY!!!
Butch
