The Magnum Research BFR in .454 Casull with 7.5-inch barrel is a single-action revolver chambered in one of the most powerful handgun cartridges commercially available. The .454 Casull generates over 1,900 ft-lbs of muzzle energy from a 5-round cylinder and is widely used for hunting large and dangerous game. It also chambers .45 Colt ammunition. Type: Revolver Action: Single-Action Caliber: .454 Casull Capacity: 5 Year introduced: 1999, USA Weight: 4.36 oz Overall length: 15" Status: Active Intended use: Hunting, Collecting