I purchased a box of brass in Norma 6mm br to form new cases for my .30BR. I started by blowing them out with the cream of wheat method. After a number of cases that needed to be tapped out of the chamber I lubed the rest with Lee lube and ran them through the form die I have, bumping the shoulder back a small amount. Most extracted just fine after fire forming but some still needed to be tapped out.
I've since fired 2 loads out of all of them and many still need to be tapped out of the chamber. Any advice?