Monty:
The 9.3X74R remains very popular in Europe and is primarily used there for driven boar. It's a .366" 285 grain bullet at 2350 fps in factory ammo. In a double rifle it's just fine for ordinary North American game. I have a number of friends that use it for wild hog, deer, bear, elk, etc. One friend also used his in Africa for both plains and heavy dangerous game, having taken giraffe, buffalo, and elephant with it. Being identical in performance to the .375 Flanged Magnum, it's a flexible and desirable chambering for a general purpose double rifle.
The Genschow's I've handled have been of sound quality. If it's a double in good shape, that price sounds way low.
In terms of recoil, if you're accustomed to an ordinary British 12 bore game gun, the 9.3 shouldn't bother you.
