Ruger's falling-block single-shot rifle — a modern interpretation of the classic Farquharson action, offered in virtually every sporting cartridge from .22 Hornet to .458 Lott. Type: Rifle Action: Single-Shot Caliber: .257 Roberts Capacity: 1 Year introduced: 1966, USA Weight: 8 oz Overall length: 42" Status: Active Intended use: Hunting, Collecting, Target