Am not surprised about the .308, because that's been my experience as well. Part of the reason so many like it for plains game is cup-and-core 180s (or even 165s) work very reliably.
"A well placed first shot is of primary importance." Yep! Given that, not many buffalo seriously charge...
We would no doubt have a great time hunting plains game, but to tell the truth am pretty much done with Africa. Tend to prefer hunting locally these days, which does not require long plane flights, and allows me to bring the meat home!
