.458 is no fun to shoot and for short range large African game. It's not even particularly good for that.
...Entirely a matter of opinion.
My family has been known to use .375 H&H, .375 Ruger, .458 Win Mag, .416 Rigby, and .450 Nitro 3.25" ... for squirrels and rabbits. (Aside from .270 Win, '06, 8x57mm, 7.7x58mm Jap, 7.62x54R, .338 WM, .300 WM, .300 Wby, 7mm Rem Mag, .340 Wby, and on, and on...)
.458 Win Mag doesn't even make my top five list of "stuff I'd rather not shoot again, unless my life depends on it." (Small hint: A light weight .450 Nitro with max-load 480 gr bullet is #1.)
I would rather shoot .458 WM in the average rifle suitable for the cartridge than .358 Winchester in the average rifle chambered for the cartridge. (One of my brothers may come along shortly and take offense to that.)
Actually....
I'd rather shoot .458 WM in the average rifle suitable for the cartridge than the .35 Whelen that I'm hunting deer with tomorrow. (It's a little on the light side, with less-than-stellar ergonomics, loaded to 'full power' by me, and, therefore, fairly mean to the shooter. But I still love that Whelen.
)
About 15 years ago, my father had some "hot" 350 grain and mild 500 grain loads that he wanted to "get rid of" for one of his .458 WMs. Though the 500s were a two-or-three-at-a-time proposition, I ran 40 rounds of the 350s through the rifle in a single session without complaint. (From a
sitting bench; and after 40 rounds of .270 Win in a 6.5 lb rifle, 60 rounds of .30-06, 100+ rounds of 8x57mm, and 20-30 rounds of .44 Mag [revolver].)