I've gotten a lot of information on hunting in Namibia from the forums on Accurate Reloading and Nitro Express.
Since I'm home on leave for a couple of weeks, I took the wife to Cabela's for her light Africa rifle the other day. We decided on a Ruger M77 in .30-06. She shoots that round well, I like the controlled round feed, and it is adequate on plains game. Her priorities will be kudu, gemsbok, zebra and warthog. We bought a Nikon Monarch 2.5x10 scope with the BDC reticle. We'll get out to the range next week and she'll have to practice a lot on her own after I go back to the box.
I'll be shooting a Remington 700 in .300 Win Mag topped with a Leupold VX-I. That is unless I buy myself another rifle before hand. Our last two gun purchases have both been for the Mrs. so I figure I'm due.

The 700 is a push feed design, but we're not hunting dangerous game and I'm comfortable with the design thanks time behind the M24.
I'll also be looking for a kudu and gemsbok, but would like to add an eland and red hartebeest. Dangerous game is a bit out of our price range this time around, but I'm pretty sure if we go again the wife is going to insist on hunting leopard and I'll want to hunt Cape buffalo.
Have any members, Rogue of course, hunted (animals, not bad guys) in Africa?
Rogue, would love to read details of your safari.