If the hunter payed attention to his or her own limitations, I don't see why the .41 won't work just fine. I would go with heavy for caliber bullets, like maybe a 250 grain hard-cast LBT style bullet. It wouldn't hurt to use a single shot pistol, so that no velocity is lost to a cylinder gap, but a revolver with a fairly long barrel should give enough velocity to drive a heavy bullet through an elk's chest. A well-placed broadside shot might not require that much bullet mass and velocity, but I believe in erring on the side of caution. If you're packing enough gun for elk, you're packing more than enough gun for black bears.