Get a 243, 25-06, or even 280 AI and be way ahead of the game.
Unless of course a bullet is the only thing in life you could possibly get a chance at smooching. Then strive for long OAL, high BC, retarded velocity, and smoochiness.
Ken, much as I like the 243, the 6mm CM is just a better "ground-up" cartridge design. May as well start out right.
The CM's are really what everything on the 308 case should have been...
“Perfection is Achieved Not When There Is Nothing More to Add, But When There Is Nothing Left to Take Away” Antoine de Saint-Exupery
