Ruger No. 1 in .450-400 NE 2.4-inch with 22-inch barrel. Rare short-case Nitro Express variant in an American single-shot falling block. Type: Rifle Action: Single-Shot Caliber: .450-400 Nitro Express 2.4-inch Capacity: 1 Year introduced: 2008, USA Weight: 83 oz Overall length: 38.5" Status: Discontinued Intended use: Dangerous Game, Collector