I have a 6 lb Belgian Visser boxlock with side plates and 26" barrels with a Churchill rib. It is choked cylinder and full and I've had it bent to fit me. I use RST and B&P 2.5 inch shells, especially the one ounce RSTs. I even use RST spreaders in the cylinder tube. I hunt pheasant, grouse and quail with it, just changing the ammo to fit the game.