I'm done. We could debate this forever. 375 H&H was once King; no argument there but it's been outmoded by better options. It is the length it is so it could enough cordite "stick" powder to push the .375 bullet that it does; not because it was the best design.
IT's still a good round; but the available rifles it's now chambered in are more expensive than what you need to pay to get the same performance in a better case.
