Omg I want! How did it get a sportsman's exception? What are you going to hunt with that? Dinosaurs are extinct.
There are still things out there that will try to kill you back if you don't drop them on the first shot and are able to shrug off most "typical" hunting rounds. Things like Bears (especially in Alaska!), Rhinos, Elephants, Bison, and Buffalo.
This 20mm monster
is a bit overkill, but most of the stuff I'd consider "sufficient" (like a Barrett M82)
doesn't have the "sportsman's exception".