.577 Tyrannosaur
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 cartridge contains a.585 in diameter 750 gr monolithic solid projectile which when fired moves at 2460 ft/s producing 10180 ft.lbf of muzzle energy.
.577 Tyrannosaur
- Name
- 577 Tyrannosaur
- Field
- rifle cartridge
- Period
- 1993
- Region
- United States
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Documentary basis
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wikipedia · .577 Tyrannosaur
In this article
Overview
Overview
The production model from A-square was based on their Hannibal rifle. A-Square is defunct as of 2012.
Key facts
Key facts
• Name — 577 Tyrannosaur • Type — Rifle • Origin — United States • Design Date — 1993 • Case Type — Rimless, bottleneck • Bullet — 0.585 • Neck — 0.6135 • Shoulder — 0.673 • Base — 0.689 • Rim Dia — 0.688 • Rim Thick — 0.063 • Case Length — 2.990 • Length — 3.710 • Rifling — 1 in 12 in (305 mm) • Max Pressure — 65000 • Primer — Large rifle magnum • Bw1 — 750 • Btype1 — Monolithic solid • Vel1 — 2480 • En1 — 10240 • Test Barrel Length — 26 in • Balsrc — Alphin (1996)
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- United States
Text attribution
Licensing
Text attribution
Part of the biographical narrative on this page reuses licensed material. Its origin, revision and licence are recorded here.
The biographical narrative on this page is based on the Wikipedia article .577 Tyrannosaur, revision 1339943771 (EN edition), by its contributors. VALÉORINE has edited that text and built its own documentary record around it. The reused material is available under CC BY-SA 4.0, and this page's reuse of it is offered under the same licence. Everything else on this page — the chronology, the holdings, the evidence, the plates and the connections — is VALÉORINE's own record. Sources and licences.
Notes from the source article
Cited by Wikipedia
Notes from the source article
These works are cited by the source article, in its own numbering. They are recorded as its citations, not as sources VALÉORINE has verified.
- 1.Alphin, Arthur B. Any Shot You Want: The A-Square Handloading and Rifle Manual. On Target Press. 624 pp. 1996. 0-9643683-1-5.
References
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Broader subject
1- rifle cartridgeTerminology
Established from a fact already recorded on a verified source.
The Encyclopedia exists whether or not anything is for sale. Corrections are recorded rather than overwritten, and every version of this record is kept. Published 16 August 2026.
Elsewhere in Militaria
6,095 published records in this field, each with its sources named.
- .56-56 SpencerTerminology
- .577 Black Powder ExpressTerminology
- .577 Nitro ExpressTerminology
- .577 SniderTerminology
- .577/450 Martini-HenryTerminology
- .600 Nitro ExpressTerminology
- .700 Nitro ExpressTerminology
- .950 JDJTerminology
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