Single-shot falling-block rifle in .257 Roberts, a cartridge developed by Ned Roberts in the 1920s. Combines a classic chambering with Ruger's elegant No.1 action. Type: Rifle Action: Single-Shot Caliber: .257 Roberts Capacity: 1 Year introduced: 1967, USA Weight: 42 oz Overall length: 38.5" Status: Active Intended use: Hunting, Collecting