im a fairly new PRS shooter who just built his first full custom gun. I chose the 6CM for the simplicity of being able to run factory ammo (berger comes with lapua brass) as well as step into reloading later on. you can shoot berger factory ammo for a year saving all the brass while slowly acquiring reloading stuff and have all lapua brass to work with when you decide to make the switch. With that being said the 6cm has been nice to me on stages where i forgot to hold over. being a faster round it didnt seem to drop as much and i was still able to get impacts even on a mess up. yes barrel life is a concern but we are still talking 1800rds or so are we not? depending how many matches you go to and how much you practice that can most likely still get most people a full season.