I need help deciding between two calibers for a build that I'm gathering parts for. All I need now is a barrel so It's time to make a decision. Mark x Mauser action, McMillan classic stock, gonna be a Rock tube @ either 20" or 18" #5 contour fluted. It's either gonna be a 280 or an '06 (help me choose). Give me your opinions on the two calibers and barrel length you would go with and why. Thanks in advance, I'm curious how this debate might go. Oh, which ever caliber I choose it will be twisted for heavy bullets. Thanks again.