Mark Sullivan, is that you? I say that reading a bit. He says you need a .577NE for dangerous game so i’d Say that your 9.3/.374 advice for plains game sufficiency matches as a logical extension. The 7x57 and it’s clones have been proven optimal for many tasks from African safaris to San Juan Hill. To suggest a 9.3 is needed is pretty intense reasoning. Heck, a 300H&H was plenty for bull giraffe. Bullet construction and shot placement are key. A bad shot with a 375 is as effective as a bad shot with a 7mm. In Africa, most of the locals I know spent their life neck shooting kudu with 243 to preserve meat. A 7x57 for heart/lung shots was thought of as more than sufficient, as was 303, 308, 06, etc. I’ve never failed to recover game with my 7x57. It’s hunted with me on two continents for bears, hyenas, kudus, warthogs, a dozen or more impala, waterbuck, and many other species. The only thing it is illegal and insufficient for I can think of is eland and giraffe.