Hamilton Bowen built a paradox (ball and shot) revolver for a friend of mine. It is chambered in .45 Colt but will also take shot loads made up in .460 cases. This .45 Colt has a .44 barrel on it that is smooth bore except for the last inch at the muzzle. Which also is still .429. It shoots shot loads well enough to kill game and is also very accurate with cast bullet loads inspite of the fact that the .452 bullets are squeezed down to .429. Odd as that sounds.