Well I have a neighbor that hunted a lot and he hunted all over the world, he said to me one, I was very young at the time 13 years old that, he dose almost all his hunting with a 7mm RM, since there was little dangerous game hunting left, this was the 1960s, and when he died, all his guns when to the local gun shop to be sold, he had just three rifles a pair of 7mm RM well cared for but shot and hunted with and a 375 H+H, I seem to recall that JOC traveled a lot with a pair of 270 Winchester M-70, reasoning being if one should break the hunt can go on with out a hitch and simply ammo . I had a lot of guns chambered for the same cartridge, I don't anymore, then again I don't hunt like I use to either or shoot as much as I use to !
