Henry Big Boy in .45 Colt with 20-inch octagonal barrel, polished brass receiver, and American walnut stock. A cowboy action staple that also handles .45 Schofield. Type: Lever-Action Rifle Action: Lever-Action Caliber: .45 Colt Capacity: 10 Year introduced: 2001, USA Weight: 6.8 oz Overall length: 38.5" Status: Active Intended use: Hunting, Cowboy Action, Plinking