.30-40 Krag
First cartridge adopted by the US Army that was designed for smokeless powder. / From Wikipedia, the free encyclopedia
The .30-40 Krag, also known as the .30 U.S. and .30 Army, was a rifle cartridge developed in the early 1890s to provide the U.S. armed forces with a smokeless powder cartridge suited for use with modern small-bore repeating rifles to be selected in the 1892 small arm trials. Since the cartridge it was replacing was the .45-70 Government, the new cartridge was considered small-bore at the time. The rifle ultimately selected for use by the Army was the Krag–Jørgensen, formally adopted as the M1892 Springfield. The cartridge was also used in the M1893, M1895, M1897, and M1900 Gatling guns.[3][4][5][6]
Quick Facts Type, Place of origin ...
.30-40 Krag | ||||||||||||||||||||||||
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Type | Rifle | |||||||||||||||||||||||
Place of origin | United States | |||||||||||||||||||||||
Service history | ||||||||||||||||||||||||
In service | 1892–1903 | |||||||||||||||||||||||
Used by | United States | |||||||||||||||||||||||
Production history | ||||||||||||||||||||||||
Designed | early 1890s | |||||||||||||||||||||||
Produced | 1892–present | |||||||||||||||||||||||
Specifications | ||||||||||||||||||||||||
Case type | Rimmed, bottleneck | |||||||||||||||||||||||
Bullet diameter | .308 in (7.8 mm) | |||||||||||||||||||||||
Land diameter | .301 in (7.6 mm) | |||||||||||||||||||||||
Neck diameter | .338 in (8.6 mm) | |||||||||||||||||||||||
Shoulder diameter | .423 in (10.7 mm) | |||||||||||||||||||||||
Base diameter | .457 in (11.6 mm) | |||||||||||||||||||||||
Rim diameter | .545 in (13.8 mm) | |||||||||||||||||||||||
Rim thickness | .064 in (1.6 mm) | |||||||||||||||||||||||
Case length | 2.314 in (58.8 mm) | |||||||||||||||||||||||
Overall length | 3.089 in (78.5 mm) | |||||||||||||||||||||||
Case capacity | 58.0 gr H2O (3.76 cm3) | |||||||||||||||||||||||
Maximum pressure (C.I.P.) | 47,137 psi (325.00 MPa) | |||||||||||||||||||||||
Maximum CUP | 40,000[1] CUP | |||||||||||||||||||||||
Ballistic performance | ||||||||||||||||||||||||
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Source(s): Hodgdon [2] |
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