Of the calibers listed, I'd go for the 338 Win Mag. It is a predictable round and easy to shoot accurately. However, as some have already mentioned, my choice would be the proven 9.3x62 Mauser. If you reload, it is an easy caliber to work with and my CZ 550 American is very accurate,

Last edited by Biggs300; 12/29/13.
Start young, hunt hard, and enjoy God's bounty.