I've never been to Africa but I've heard (may be rumor only) the 9.3X62 is the minimum caliber for dangerous game in some areas, and it fits well in standard length actions.

For the U.S. 25.06, 338-06 or 270, 35Whelan make nice pairs so I have them all.
For Africa, .270,9.3X62 sound Perfect to me.

"Camping places fix themselves in your mind as if you had spent long periods of your life in them.
You will remember a curve of your wagon track in the grass of the plain like the features of a friend."
Isak Dinesen