One Cartridge: 577 Tyrannosaur custom loaded by a licensed ammunition maker for ammo-one.com, loaded with new turned brass with a “577 TREX” Head-Stamp and a 750 grain, FMJ (Full Metal Jacket) projectile.
History of the 577 Tyrannosaur cartridge:
The 577 Tyrannosaur , a.k.a. 577 T-Rex was the largest Proprietary Cartridge introduced in 1993 by the now closed A-Square Company as an entirely brand new Cartridge for the A-Squire rifle.The 750 Grain Full Metal Jacketed projectile moves at 2,460 Feet per Second,to generate over 10,180 Foot Pounds of Energy.If you have one of these firearms your ready to go Dinosaur hunting.
