DOES ANYONE HAVE AN ASPIRIN? OR TWO? Art Alphin of A-Square Rifles designed the .577 Tyrannosaur cartridge at the request of a professional hunter who was nearly pulped by an elephant that had been shot in the foot and a tusk by a client. The T-Rex propels a 750-grain bullet at 2,400 fps, and if my calculations are right, it develops exactly twice the recoil of a .458 Winchester. The rifle itself is the Hannibal model. It weighs 13 pounds, is based on a modified P-17 Enfield action, and incorporates three mercury recoil reducers. Everything in it or on it is heavily reinforced. Except you. 605-234-0500; asquareco.co.