No brainer 9.3x64. Next step the 375s, some really good ones but once you get above about 2500 fps with 286 to 300 gr. bullets recoil becomes significant. John Barseness wrote about a guy with a 9.3 x 8mm Sisk and the guy kept chanting what a big bad azz cartridge it was. He botched the shot on a Nilgai and JB pointed out it was a medium bore. Careful what you wish for. Ross Seyfried thrives on recoil but his 585 Nyati was just too much of a good thing. I believe he sold or converted the ones he had.
When it's all done, you'll have a very special and powerful 9.3.....and yes....you still won't have a .375 H&H.....
The H&H is so good in so many ways that it is difficult to improve or even equal it. The 9.3x62 has virtue by being lighter and having less recoil than the H&H but not quite it's equal.
