The .577 Tyrannosaur is a cartridge designed for big game in Africa. The .577 Tyrannosaur contains a .585-inch (14.9 mm) diameter 750-grain (49 g) Monolithic Solid Projectile which when fired moves at 2,460 ft/s (750 m/s) producing 10,180 foot-pounds force (13,800 J) of muzzle energy. Those factors mean the .577 Tyrannosaur provides a lot of recoil, especially in a rifle light enough to be carried around in the field.

Would you shoot the .577 Tyrannosaur?

How powerful is the .577 Tyrannosaur?

The .577 Tyrannosaur delivers about 4x the force of a .308, despite traveling about 200 ft/s slower. Interestingly, it delivers around 3,000 to 4,000 foot-pounds less force than a .50 BMG, which is probably one of the reasons why it hasn’t taken off in popularity. Why deal with that much recoil when there are better alternatives?

I’m still glad it was made so we can get a chuckle out of people shooting such an insane rifle.