Peacemaker was a
nickname given to Colt’s
Single Action Army revolver model of
1873, or the similar Colt’s
Frontier Single Action revolver. The Frontier model was chambered for the .44 WCF cartridge (also known as the .44-40), while the Single Action Army was chambered for the .45 Colt cartridge. These models of
revolvers were amongst the most popular of the
Old West.
The advantage of the Frontier model was the common use of the .44-40 cartridge in both the Colt’s revolver and in the Winchester lever-action rifle or carbine.
Even today single action revolvers have a devoted following, and a significant number of people would rather have one good SAA than all the fancy-pants sooper-dooper high-capacity aluminum alloy-n-polymer pistols in the world.