RE: .308
Twist rate of 1:12 is in the middle of the pack. Should handle 165 gr. +/- bullets at typical muzzle velocities just fine. However though the 308 Win. is my hunting cartridge of choice, I am no expert on internal (or external for that matter) ballistics.For a good treatise on the 308 Win., I suggest you search on "308 Winchester Cartridge Guide". This is a nice compact article on the 308 WIn. written a few years ago.