The first magnum rifle I fired was a Mauser Mark X in .375 H&H, so the big Mauser action and the African calibers just go hand in hand for me. My CZ 550 in 6.5x55 is a fantastic rifle, and the higher-end CZ American Safari rifles are very nicely put together. (One in .300 H&H would be an awesome companion rifle to a .375
.)
The Winchester 70 Safari is another fine rifle that will do everything you’ll ask of it. The one I held felt great, almost nimble despite the size and weight. They’re not made anymore, but if you find one of the stainless M70 models it’ll battle the elements should you get drenched day after day on a coastal hunt.
When it comes down to buying a high dollar rifle, the fit to you is a very important thing. Try to find a retailer that has one (or something very close) in stock that will let you see how your choices fit for you. No one wants to sink $2,000 to $3,000 into a fine rifle/scope and pricy ammo and reloading components ... and then be disappointed because it doesn’t shoot, carry or just “feel” right to you.
You’ve picked one of the finest calibers for hunting literally anything on the planet and a couple of rifles that are world-standards for quality and hard-hunting serviceability. Good luck with your search, let us know what you choose!
Stay safe.