.577 Tyrannosaur
Appearance
577 Tyrannosaur | ||||||||
---|---|---|---|---|---|---|---|---|
Type | Rifle | |||||||
Place of origin | United States | |||||||
Production history | ||||||||
Designed | 1993 | |||||||
Specifications | ||||||||
Case type | Rimless, bottleneck | |||||||
Bullet diameter | 0.585 in (14.9 mm) | |||||||
Neck diameter | 0.6135 in (15.58 mm) | |||||||
Shoulder diameter | 0.673 in (17.1 mm) | |||||||
Base diameter | 0.688 in (17.5 mm) | |||||||
Rim diameter | 0.688 in (17.5 mm) | |||||||
Rim thickness | 0.063 in (1.6 mm) | |||||||
Case length | 2.990 in (75.9 mm) | |||||||
Overall length | 3.710 in (94.2 mm) | |||||||
Rifling twist | 1 in 12 in (305 mm) | |||||||
Primer type | Large rifle magnum | |||||||
Maximum pressure | 65,000 psi (450 MPa) | |||||||
Ballistic performance | ||||||||
| ||||||||
Test barrel length: 26 in Source(s): Alphin (1996)[1] |
The .577 Tyrannosaur or .577 T-Rex (14.9×76mm) is a very large and powerful rifle cartridge developed by A-Square in 1993 on request for professional guides in Zimbabwe who escort clients hunting dangerous game. The cartridge is designed for use in "stopping rifles" intended to stop the charge of dangerous game. The 577 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.[1] The production model from A-square is based on their Hannibal rifle.
References
- ^ a b Alphin, Arthur B. (1996). Any Shot You Want (First ed.). On Target Press. ISBN 0-9643683-1-5.