.45-70 Government (Springfield)
The .45-70 rifle cartridge, also known as the .45-70 Government and .45-70 Springfield, was developed at the U.S. Army's Springfield Armory for use in the Springfield Model 1873, which is known to collectors as the "Trapdoor Springfield." The new cartridge was a replacement for the stop-gap .50-70 Government cartridge, which had been adopted in 1866, one year after the end of the American Civil War.
