.577/450 Martini–Henry

The .577/450 Martini–Henry is a black powder, centrefire rifle cartridge. It was the standard British service cartridge from the early 1870s that went through two changes from the original brass foil wrapped case (with 14 parts) to the drawn brass of two parts, the case and the primer. The .577/450 Martini–Henry was introduced with the Martini–Henry, in service it succeeded the .577 Snider cartridge and was used by all arms of the British armed forces as well British colonial forces throughout the British Empire until it was itself succeeded by the .303 British cartridge after an unsuccessful trial of a .402 calibre.

Also known as 11.43x60R (61R)

.577/450 Martini–Henry
.577 Snider, two .577/450 Martini–Henry (coiled brass & drawn brass) and .303 British cartridges.
Place of originUK
Service history
Used byBritish Empire
WarsAnglo-Zulu War
Mahdist War
First Boer War
Second Boer War
World War I
Production history
Designed1871
Specifications
Parent case.577 Snider
Case typeRimmed, bottleneck
Bullet diameter.455 in (11.6 mm)
Neck diameter.487 in (12.4 mm)
Shoulder diameter.628 in (16.0 mm)
Base diameter.668 in (17.0 mm)
Rim diameter.746 in (18.9 mm)
Rim thickness.05 in (1.3 mm)
Case length2.34 in (59 mm)
Overall length3.12 in (79 mm)
Ballistic performance
Bullet mass/type Velocity Energy
480 gr (31 g) lead alloy. 1,350 ft/s (410 m/s) 1,940 ft⋅lbf (2,630 J)
Source(s): Cartridges of the World.
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