As I read this there is a smith & wesson .32 w.c.f. manufactured circa 1917/18 loaded with cartridges charged with mild amount of w-231 under an aloxed .310" ball. Ahead of those case mouths rests an aloxed .315" in each chamber. Twelve holes in each target in about 2.5 seconds. Accuracy ? Minute of medium pizza box at 15 paces.....Thanks mister jose for peeing in/on the corn flakes.
Then there is a heavy barreled 28 gauge muzzle loader that fires four 17/32" steel balls at a time.