I just used a new Lee collet die for neck sizing my 8 MM Mauser brass. I wanted to just neck size my Mauser brass. I am using a RCBS Rock Chucker press and my dies are usually set up to cam over. The instructions for die set by Lee was a little different, no cam over. I sized 25 pieces of brass, what a easy die to work with, no lube, and you and feel the collet resizing the neck. After I seated the 180gr. Nosler BT's, I rolled the loaded rounds on a piece of marble, I could not see any bullet wobble. I can't wait to shoot these rounds. Thumbs up for the Lee collet neck sizing dies.