An acquainance is interested in a Stevens falling-block single shot, Model 44, that is currently chambered in .32 rimfire. The ammo is prohibitively expensive, and scarce. The rifle has a seperate hammer, but the firing pin is on the breech block, if I understand his description correctly. Is there anyone out there converting these to a centerfire caliber? I recall a company that was modifying the old 5mm Remington rimfire guns to a centerfire cartridge, supplying brass and dies, etc. Dunno if such work is feasible on this li'l gun. Any thoughts or ideas?