Merkel RX Helix in .300 Win Mag with 23.6-inch barrel, Merkel's modular straight-pull bolt action offering rapid barrel and caliber changes for driven-hunt versatility. Type: Rifle Action: Straight-pull bolt action Caliber: .300 Winchester Magnum Capacity: 5 Year introduced: 2012, Germany Weight: 88 oz Overall length: 42" Status: Active Intended use: Big game hunting / Driven hunt