Really, why? Just because you can build something doesn’t mean that you should. A “sportsman’s exception”? What are people hunting that need a “rifle” of this size? Dinosaurs are extinct.
Armored vehicles arent.
But this is not the average persons gun nor can it be fired quickly, or lugged around easily. They only made three, they are custom rounds,and while this gun weighs around 50 pounds the other two weigh about 100,pounds.
So,i think we are pretty much immune from your concerns, as a country.
It’s a “varmit” rifle...For groundhogs...*ROFL*
I can tell you why you need a bullet that big, whatever you hit with that round is automatically diced! All you have do is pick up the pieces and cook them.
Moby Dick?