The Frontier Six-Shooter chambered in 44-40 Winchester allowed cowboys to carry one cartridge for both their rifle and revolver. The dual-caliber convenience made it enormously popular. Type: Revolver Action: Single-Action Caliber: 44-40 Win Capacity: 6 Year introduced: 1878, USA Weight: 36.5 oz Overall length: 13" Status: Discontinued Intended use: Frontier Use, Hunting, General Use