I have experience with three 6.5's, 264WM, 6.5x06 and my current 6.5x55. I shot the 6.5x06 a lot, fried the barrel. I killed lots of stuff with it. In the end it's no better than the .270 it so often gets compared to. But so what. I might get another some day just because. I currently load for and shoot a 6.5x55 a good bit, as I age I am less and less willing to put up with recoil so I'm using this little Ruger a lot. It's the most accurate factory rifle I own. I've seen that with the 140gr bullets it trajectory it almost the same as the .06 with the 165gr bullets, but with much less recoil. I don't see a down side.