I have several 6.5 rifles, they are all nearly the same. The difference isn't worth worrying about when hunting or shooting at a range within any reasonable distance.
@KevinMI own a 300wsm and 30.06. I am considering purchasing another rifle for mainly my children to use as the grow up. Think a 6.5 CM or 260 Rem would be a good option. Which one is better and why? I am a reloader.