Interesting project. But just wondering why you wouldn't just take a 50 BMG and just cut the barrel shorter since you can shoot 660 grain FMJ and the 14,000 ft/lbs at the muzzle. You won't be able to hunt very long in a shot gun only area with that until words out and your illegal. What is the goal? Are you one of those mad scientists? Are you building this shoulder canon to take out engine blocks at close range? The 50 is already doing that at well over one mile. Hats off anyway to your engineering skills.
It is better to be judged by 12 than to be carried by 6.
