New Ultralight Arms Model 20 in 257 Roberts. Forbes offers the 257 Roberts in the Model 20 for hunters who appreciate the cartridge's heritage and efficiency. At classic velocities from a 22-inch barrel, the Roberts delivers excellent deer performance with moderate recoil — well-matched to the ultralight platform. One of the most traditional NULA chamberings, connecting Forbes' modern manufacturing to a cartridge that predates World War II. Type: Rifle Action: Bolt-Action Caliber: 257 Roberts Capacity: 1 Year introduced: 1990, USA Weight: 52 oz Overall length: 41" Status: Active Intended use: hunting