I have a Ruger Alaskan, 20” stainless in .416 Ruger. Love it!
Never shot a Cape buffalo but lots of water jugs, steel plates & 1 antelope. I load 350 gr. Speers at about 2,400 which make pleasant enough recoil for enjoyment while handling anything in North America I’m likely to go after. The 400 gr. factory stuff isn’t too brutal either.

For what it’s worth, I do like this cartridge & while it’s not a bizarre build, I like this rifle.