I wish I knew more. I was trying to retain as much info as possible. This guy was good. He checked the rifle for physical issues and it was fine. We took 3 thousands off the shell holder and trimmed the case to 2.580. Fitted the bullet to the rifling and Switched from cci to federal match primers and were using a 168 grain Sierra bullet. Then began reloading different loads and shooting. We came up with 82 gr Retumbo. I'm not sure if the bullet is below the neck.