I have had .30 Carbine, 7.62 x 39, .30-30, .300 Savage, .308 WCF, .30-06, and .300 Win. Mag.

I shot my first deer with the .30 Carbine in a Marlin Model 62 Levermatic. With a Tasco 4 power scope on it I could shoot 1" 5 shot groups with it consistently.

For all North American big game, I'd have to go with the .300 Win. Mag. For the smaller stuff I'd use Remington Managed Recoil rounds which more-or-less duplicate the .300 Savage.