I would also run them through the annealer if you have one.I appreciate all the comments. The data I am using is from the Hornady guide for that particular bullet. Those loads are coming out at 2925 ft per second already so they are a pretty fast bullet. It is happening at the chamber, not resizing. I am going to go up a bit on the charge and check again. Are these cases safe to use again?
Thanks again,
Grub