I have started using the Lee Crimp Die in a 30-06 while the gun already shot sub-moa with 165's accubonds and Sierra game Kings HPBT it shot a little over a 1/16th of an inch better when crimped. I did't experience any difference in need for triming brass. The Lee Crimp Die is about the easiest process to do in all of my reloading steps. If I am getting close to a compressed load I like the idea that I know the bullet isn't going to move. Buckfever1