.577 Tyrannosaur
| 577 Tyrannosaur | ||
|---|---|---|
| Type | Rifle | |
| Place of origin |  United States |
|
| Production history | ||
| Designed | 1993 | |
| Specifications | ||
| Parent case | New Design | |
| 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 | ||
| Bullet weight/type | Velocity | Energy |
| 750 gr (49 g) Monolithic Solid | 2,480 ft/s (760 m/s) | 10,240 ft·lbf (13,880 J) |
| Test barrel length: 26 in Source(s): A-Square Any Shot You Want |
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The 577 Tyrannosaur or 577 T-rex is a cartridge developed by A-Square in 1993 for professional guides that escort clients hunting dangerous game. The cartridge is designed for use in "stopping rifles": A rifle 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 platform. This cartridge has the distinction of possessing the heaviest free recoil of all commercially available, shoulder-fired weapons, at 220 lbs into the shoulder with its heaviest solid of 750 grains. The larger caliber, .700 Nitro Express, drives a 1,000 grain solid at 8,900 foot-pounds, with free recoil of 200 lbs into the shoulder.[2]
[edit] References
- ^ Alphin, Arthur B. (1996). Any Shot You Want (First ed.). On Target Press. ISBN 0-9643683-1-5.
- ^ "A-SQUARE RIFLES". A-Square. http://a-squareco.com/Rifles.html. Retrieved 27 February 2011.
[edit] External links
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