9.3X74R is the way to go, in the U.S. we have many good bullets to choose from. Cabela's has the Sabatti's on sale now a good double, made as a double rifle, not on a shotgun frame that some one is trying to make work.
If you look at a Sabatti make sure you check the muzzle, they are known to grind the inside of them to regulate them. And pick one out with a good target.
