[1] Between 1871 and 1873, the .44 Model 3 was used as the standard United States Army sidearm.

[1] The cartridge used an outside lubricated heeled bullet, either Boxer or Berdan priming,[1] and both black and smokeless powder loadings.

[1] The heeled bullets make the cartridge incompatible with .44 Russian, .44 Special, and .44 Magnum, which was made larger in diameter and longer to cover the exposed part of the bullet.

Corral on October 26, 1881, Wyatt Earp carried an 8-inch Model 3 in .44 American.

Earp had received the weapon as a gift from Tombstone, Arizona, mayor and Tombstone Epitaph newspaper editor John Clum.