I have a Bergara HMR Pro in 308 that I'm getting a lot of ammo through to improve my skills. I'm also getting some time with a 6.5 CM and really like it. For what I need I (distance, PRS style, hunting deer, coyote and hogs) I don't see anything that the 6.5 doesn't do better than 308. So my question is when I have shot out my 308 barrrel and want to replace the barrel. If I want to have a premium barrel put in the Bergara and change to 6.5 CM is all that is needed is a different barrel? They both use the same AICS mags but wondering what else if anything would be needed to be changed? Thanks!