I'd have to add that my 300 H&H, the "original" 300 Magnum, is a great all-around caliber.

Mine's a Ruger #1 single-shot. It's exceptionally accurate, sports a 26" barrel and has a nice smooth trigger.

Of course, I handload a lot for it, but the rifle shoots tightly with the Federal's 180gn Nosler load too.

I wouldn't hesitate to take it to Africa for plains game.