I was trying to load some test loads the other day and ran into a problem I've never encountered before. When it came time to seat the bullet, it was taking so much effort to seat the bullet that the seater stem was deforming the bullet jacket ( it was leaving a circular ring around the tip). This wasn't just a superficial mark, it was deep enough you could feel it with your fingernail. The cases had been f/l resized with the same dies I have used for years. The load was 223 rem. The cases were federal commercial brass (FC 11 to be exact). The I.D. of the neck was .216. The bullet was Hornady 68gr bthp. After noticing what was happening to the bullet tips, I switched to Lake City cases, which solved the problem. My question is: would annealing those FC cases soften up the necks enough so that I wouldn't have that problem? I have quite a few of those cases and would hate to toss em, but I don't want to damage my bullets and ruin my accuracy either.