Henry Big Boy in .357 Magnum, 20-inch octagon barrel. Brass receiver, American walnut stock. The original centerfire Henry Big Boy in its flagship configuration. Type: Lever-Action Rifle Action: Lever-Action Caliber: .357 Mag Capacity: 10 Year introduced: 2000, USA Weight: 8.68 oz Overall length: 38.5" Status: Active Intended use: Hunting, Home Defense, Gift