The Blackhawk .357/.38-40 Convertible comes with two cylinders — one in .357 Magnum and one in .38-40 Winchester. The .38-40 is a historic cartridge from the black powder era that has experienced a revival in cowboy action shooting. This combination allows a single Blackhawk to serve both as a modern defensive and hunting revolver in .357 Magnum and as a period-correct cowboy action competition gun in .38-40. Type: Revolver Action: Single-Action Caliber: .357 Magnum Capacity: 6 Year introduced: 1999, USA Weight: 42 oz Overall length: 10.5" Status: Active Intended use: cowboy_action, sporting, collecting