I’m a 35 fan too, have a 35 Whelan I inherited from my grandfather in Pre 64 M70 it’s a shooter with 250s. The advantage of the 9.3 is no belt on the case so reloads are effectively unlimited as they can be trimmed and full length resized via dies as you can’t do that with the belted cases based off the 375 which the 358 is just a shortened 375 hh case. Belted cases eventually bulge at the belt and no dies other than a special collet die that the one man making them quit years ago fixes that bulge. Plus you need to have a Smith open up your Mauser 98 actions bolt face to magnum size the 9.3 uses the standard 30/06,8mm Mauser face.
Speaking of a pre64 M70 Winchester, that is #2 on my get-someday gun list. When I was a kid, our whole family used .308 W for hunting. I heard about a .308 Magnum and I wanted one immediately and still do. So I want the M70 in .308 NM caliber. (Actually, it was learning about the .308 NM when I learned about its big brother, the .358 NM.) I know there is no good reason to get a .308NM over a .300 Win Mag, other than I want one, which as a gun guy, you understand the importance of that. Back to the original question, the .308 NM would also be a good gun for a moose.