6.5 CM or 260, probably can include 6.5X55 as well, gives the most performance for the least recoil. Nobody will ever notice the difference in recoil between the Creedmoor, 260 or 243. But the 6.5's will kill anything 270 will kill.
The centerfire 22's have even less recoil, but I have a hard time thinking anyone one couldn't handle 243 or 6.5 recoil.
