The.50-70 Government, also known as the.50-70 Musket,.50-70 Springfield, and.50-1+3⁄4" Sharps is a black powder cartridge adopted in 1866 for the Springfield Model 1866 trapdoor rifle.
.50-70 Government cartridge, note the hidden centrefire primer is held at the base internally by the cartridge crimps.
Sharps rifles are a series of large-bore, single-shot, falling-block, breech-loading rifles, beginning with a design by Christian Sharps in 1848 and ceasing production in 1881. They were renowned for
.50-70 Government
…in .50-70 and made some rolling blocks at their Springfield Armory facility in this caliber. The U.S. Army also had a large supply of percussion-fired Sharps carbines at the close of the Civil War and had the Sharps Rifle Company convert about 31,000 of the rolling-block rifles and carbines in .50-70 for cavalry use…