It has been a long time since I loaded a rifle bullet. Today I noticed some of the copper jacket being shaved off while being seated. It is miniscule, but I have not noticed it before. Is this normal? should I reduce neck tension? I did trim the cases and debur both inside and out. Would beveling the neck with fine sand paper help? I am using Hornady 150 grain SST in a Winchester 270 WSM case.