MSK....I agree with Bob. A 338 will be more than enough gun for a plainsgame hunt. I have been taking my 300 H&H mod 70 made in 1937. It has been a classic hunt with a classic caliber. My wife hunted this last june with me and took zebra,impala and nyala with a 257 weatherby... all hit the ground dead! Mostly take a gun you trust and enjoy the trip.
MARK