The Winchester Model 70 Featherweight in .280 Ackley Improved is a specialty variant chambering the modern wildcat/standardized cartridge that offers approximately 100 fps more velocity than standard .280 Rem. The .280 AI achieved SAAMI standardization in 2007, making Winchester's adoption in 2008 an early endorsement of the improved cartridge for hunting use. Type: Bolt-Action Rifle Action: Bolt-Action Caliber: .280 Ackley Improved Capacity: 5 Year introduced: 2008, USA Weight: 6.75 oz Overall length: 44" Status: Active Intended use: Hunting