Hello Buckums,
Khomas Highland Hunting and Fishing Safaris of Namibia, welcomes you to the greatest forum on earth.
You can’t go wrong with a sturdy .375 H&H, topped with an equally sturdy low power scope and 300 grain modern bullets for Buffalo + Plains Game.
For Plains Game alone, almost any .375 H&H bullets of 250 grains, 270 grains and / or 300 grains work well.
My favorite so called “Plains Game Rifle” is the .375 H&H, with old fashioned 300 grain round nose soft points, such as Hornady, Remington, Norma, etc.
It’s a lot less destructive than the various .300 Magnums, on meat and skins of the smaller animals but breaks the heavy shoulder bones of eland, zebra, waterbuck and so forth, like breaking pretzel sticks.
(Likewise, it is also my favorite for hunting in Alaska).
I look forward to your hunt report.
Best Regards,
Velo Dog.