O'Conner's advise is still valid
O'Conner, legendary writer of the rifle, " If I could own only one rifle, it would be the 375H&H Mag. , if only two, I'd include the 270 Win."
The 375 H&H remains is the most versitile, widely accepted cartridge the world over even after some 80+ years from African cape buffalo, lion, lepoard to superb cross-canyon elk gun it can't be beat. It is the prefered cartridge in Alaska and will knock a charging brown bear to the ground or lift a 60 inch record moose off its feet & to the ground ( I did so.) Incidently, at my 155lb weight my Rem.700 Safari is not un-pleasant to shoot, a big push but not a painful jab of the 300. mags. Few realize that the 300 H&H and the 375 H&H were always the only two cartridges that headspace on the belt. The public related the belt to "magnum" so it was put on other cartridges (e.g., 7mm Rem.Mag.) as a sales gimick but served no purpose. I've carried my Win.Mod.70 , 270Win. for almost 50 years & shot everything from Elk in NM to jack rabbits, coyote & many mule deer -- never more than one shot. If you have the venerable 270 you'd be very foolish to trade it for any of the 7mm or 30 cal. mags. [PS You can load the 375 to 5,000 lb-ft. muzzle energy & as the saying goes for the 375.. 'you need fear nothing that walks on the planet."]