I am in the process of gearing up to put together some loads for my Cogswell 12 bore 'Paradox' (Cogswell's trade name for their version was "Cosmos") but looking done the bores, it has the same basic pattern of short, tight rifling at the end of each barrel. I am not aiming for the 'stomp the buffalo' load at first, but I am looking forward to seeing how accuary, recoil, etc stacks up against my more traditional British DRs. Dave