I have a 6.5CM, and 6.5x55 and .30-06 barrels on my other rifle. I use 140gr ballistic tips in the CM, 140 SP in the Swede. Perfectly happy with both 6.5's, and love the fact that I keep the sight picture BUT the .30-06 with 165gr ballistic tips is a touch more authorative allows a margin for error and is deeply satisfying!