The McMillan TAC-300 .300 Win Mag is a usa-made bolt-action rifle chambered in .300 Winchester Magnum, introduced in 2010. Primary use: hunting, sport. Type: Rifle Action: Bolt-Action Caliber: .300 Winchester Magnum Capacity: 5 Year introduced: 2010, USA Weight: 112 oz Overall length: 44" Status: Active Intended use: hunting, sport