Anything Nos PT, Swift A-Frame 180, or even better...anything similar in 200-220 gr. I believe even Rem has 06 ammo for sale w/ 220 grainers (v. popular in AK. My son just saw a pile at a Sportsmen's Warehouse down S.) He will NOT be disappointed by using heavy-for-caliber bullets (high SD. BC and plastic tips means nothing for typical 06 shot distances, and doubly so in Africa. What you're looking for is terminal performance.) Although I like the Barnes bullets in some hunting situations (i.e. 165ish gr in 3,000 fps handloads for deer and even better in higher V rigs like a 300 WM), I find the expansion sometimes disappointing on larger stuff at the mediocre velocities of typical factory ammo for an '06. (i.e. We've witnessed MUCH greater success on gemsbok (~350-550 lb) using 200-220 grainers than anything smaller (likely due to the more traditional bullet construction/expansion coupled with the penetration that comes with high SD ballistics. You'll be awfully surprised how much tougher an impala or even springbok is constructed as compared to the physically larger whitetail deer!!! They are built to withstand predator attacks. We typically use 200 NPs for combined deer/bear seasons in the NE US. Go bigger and no disappointment will result. GL!