.45-70
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The .45-70, also known as the .45-70 Government, .45-70 Springfield, and .45-21⁄10" Sharps, is a .45 caliber rifle cartridge originally holding 70 grains of black powder that was developed at the U.S. Army's Springfield Armory for use in the... Wikipedia
Bullet diameter: .458 in (11.6 mm)
Designed: 1872
In service: 1873–1892
Maximum CUP: 28,000 CUP
Maximum pressure (CIP): 32,000 psi (220 MPa)
Produced: 1873–present
Variants: 45-70 +P