The 375 H&H Flanged is a good caliber for light double, but take it as you want, not a lot of manufacturers produce it on a light receiver.
The 9,3x74R is also excellent one, the famous hunter and poacher Taylor, who was never kind with continental calibers, considerd it (even if he never used one) a good and potent cartidge.

Today if you compare Norma factory loading the 375H&H Flanged is given for 730m/s with 300grs bullet. The 9x3x73R from same company is 710m/s for 285grs. Not enough difference in real world.

But the 9,3x74R can get an advantage. It's commonly available in light double rifle (s&s) with adjustable convergenge. For an handloader it's easy to get 15 to 20m/s more without endangered your rifle (9,3x74R don't develop too much pressure) and you can easply (more or less) adjust your regulation. Merkel 141 is one of this doubles. It is based on 28 gauge caliber but renforced. And imagine the same receiver in it's express drilling form, 2x9,7x74R above and one 20/76 gauge shotgun tube below. All around tool for 90% of game on Earth.

Prices, even high, are less than best 375 H&H Flanged doubles. Cases are easier to get and much lower price. Good bullet are available too including fmj or solid.
Bullet can go to 325grs for a velocity of 680 to 700m/s with new powders. Enough for game up to buffalo.

If you like old caliber with good reputation you surely know the 360n�2. The 9,3x74R is very very close to it.
It could be a deadly Alaskan close range big game combo ammo/rifle.
The only thing against it: does'nt have the "aura" and african smell of the old english one.

Dom



Experience is a lantern, carried in our back, only lightening already walked path. (Confucius)