.50-70 Government | ||||||||||||||||
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Type | Rifle | |||||||||||||||
Place of origin | United States | |||||||||||||||
Service history | ||||||||||||||||
In service | 1866–1873 | |||||||||||||||
Used by | United States | |||||||||||||||
Production history | ||||||||||||||||
Designed | 1866 | |||||||||||||||
Produced | 1866–present | |||||||||||||||
Specifications | ||||||||||||||||
Case type | Rimmed, straight | |||||||||||||||
Bullet diameter | .515 in (13.1 mm) | |||||||||||||||
Neck diameter | .535 in (13.6 mm) | |||||||||||||||
Base diameter | .565 in (14.4 mm) | |||||||||||||||
Rim diameter | .660 in (16.8 mm) | |||||||||||||||
Rim thickness | .065 in (1.7 mm) | |||||||||||||||
Case length | 1.75 in (44 mm) | |||||||||||||||
Overall length | 2.25 in (57 mm) | |||||||||||||||
Primer type | Benét Internal | |||||||||||||||
Maximum pressure | 22,500 psi (155 MPa) | |||||||||||||||
Ballistic performance | ||||||||||||||||
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Test barrel length: 28" Source(s): Accurate Powder [1] |
The .50-70 Government / 12.7 x 45 mm R, also known as the .50-70 Musket, .50-70 Springfield, and .50-1+3⁄4" Sharps[2][3]) is a black powder cartridge adopted in 1866 for the Springfield Model 1866 trapdoor rifle.