There have been a number of famous hunters/authors who have sung the praises of the .375 H&H in Africa. John Taylor had high praise for it, along with Robert Ruark and later Finn Aagaard, Peter Capstick, and many, many more.
The .375 H&H fills a unique niche at the small end of what are commonly called "dangerous game" calibers. It has more velocity than the true "heavies" like the .458 Winchester and Lott magnums, the .470, .500, and similar nitro expresses, or the .404, .416, .425 class of cartridges. As such, it's the only "large bore" that is really suitable for open country hunting of large, thin skinned game. I think it's the ultimate elk caliber, still nudging out even the .338 Winchester mag.
With solids it reportedly penetrates better than any of those previously mentioned large bores, but I can't personally speak to that. I've never pointed mine at anything that would demand solids. Even at that, however, I have never recovered a bullet, and all I use are Partitions or Sierra boat tails. The furthest I've seen one penetrate was a frontal shot on a large caribou bull, where I was about 30 yard away and planted a 300 grain Sierra in his brisket. It exited one of his haunches, right next to his anus. This, with a plain Jane "cup and core" bullet that, if one believes the advertising hype these days, should have blown up on his chest hairs. Oh well...
As an interesting aside, I repeated the shot three or four days later on another bull, but this time with a heavy cast bullet .45 Colt load from about ten yards. Same result - stem to stern penetration on a full grown caribou bull. Even more interesting, both bullets weighed 300 grains, where the rifle launched its at 2,500 fps and the Colt at about 1,150 fps. Damage in the chest cavity was far more severe with the rifle, but one would expect that from the much higher velocity. Damage to edible meat was the same "you could eat right up to the bullet hole...".
Packing one out, late September on the Tagigawick River, with my .375 H&H Model 70 in hand:
