Samuel Colt's partnership with Texas Ranger Captain Samuel Walker produced this enormous six-shot percussion revolver — the most powerful handgun of the 19th century. The Walker weighed over 4.5 pounds and fired a 220-grain ball over 60 grains of black powder. Type: Revolver Action: Single-Action Caliber: .44 Black Powder Capacity: 6 Year introduced: 1847, USA Weight: 4.9 oz Overall length: 15.5" Status: Discontinued Military use: Yes Intended use: Military, Collecting