The Ridgeline in 280 Ackley Improved is Christensen Arms' nod to the hand-loader, offering the improved 280 AI cartridge in their premium carbon fiber platform. The 280 AI delivers ballistics approaching 7mm Rem Mag in a standard-length action with better case efficiency, appealing to precision hunters who hand-load. Type: Rifle Action: Bolt-Action Caliber: 280 Ackley Improved Capacity: 4 Year introduced: 2018, USA Weight: 100 oz Overall length: 44.5" Status: Active Intended use: Hunting