archerman, you do realize “Africa” is a continent and not a country, and that each country makes their own rules? Just thought it may be helpful to point that out. Minimum legal cartridges are posted under the “hunting info by country” heading on this website. Some have a caliber requirement, some an energy and caliber requirement, some neither.
Echoing this a little bit, even when it comes to a country, rules can be quite diverse.
Having caught a little flak here and there in social settings for an interest in hunting and Africa in particular, I like the example of Sandhill Cranes.
Those in North America might be familiar with them from visiting Florida, where Sandhill Cranes are an endangered species, protected, and with signage rivalling those warning of alligators in number to let you know they're endangered and protected.
.... meanwhile, in Texas, ~500km west, Sandhill Cranes are sustainably hunted. Limit is three per day.
"Africa" is an awfully big place. And that elephants or lions might be critically endangered in some parts, doesn't mean they're not game animals in others - if not outright nuisance animals depending on the circumstances.
Seeing "Africa" as a monolith leads to confusion. Just as if one was comparing hunting opportunities in the Sierra Madres to that of the Rockies, or the plains, or of anywhere else on the continent.
Most people just don't know any better.