I have some 6br brass that I have loaded 9 times
It was annealed after five firings
My problem is no matter how far I set the shoulder back, it still hard bolts
I have found the problem to be at the base area of the shell
It measures .0005 to.001 larger than new brass
Light rub marks appear in this area after being bolted
I annealed a few again with no change

Has anyone seen this before?
I thought I would get more loads out of the brass than this
Not complaining, just curious if others have had this problem
Thanks
Jack