Ruger No.1-H Tropical in .458 Lott with 24-inch barrel. Jack Lott developed this cartridge after a cape buffalo attack, improving on the .458 Win Mag's velocity consistency. Type: Rifle Action: Single-Shot Caliber: .458 Lott Capacity: 1 Year introduced: 1971, USA Weight: 50 oz Overall length: 41.5" Status: Active Intended use: Dangerous Game, Safari