Cooper Arms Model 52 Classic in 280 Remington. The 280 Remington — also known as the 7mm Express Remington during a brief marketing experiment — sits between the 270 Win and 30-06 in performance and enjoys a passionate following among western hunters. Cooper's Model 52 is a natural home for the cartridge, and the Classic-grade stock in oil-finish walnut suits the 280's understated excellence. Type: Rifle Action: Bolt-Action Caliber: 280 Remington Capacity: 1 Year introduced: 1991, USA Weight: 62 oz Overall length: 43.5" Status: Active Intended use: hunting