Heym SR21 in .300 Win Mag with 23.6-inch barrel. A magnum configuration of the traditional Heym bolt-action with controlled-round feed and a walnut stock. Type: Rifle Action: Bolt-Action Caliber: .300 Win Mag Capacity: 4 Year introduced: 2001, Germany Weight: 107 oz Overall length: 43.5" Status: Active Intended use: big_game, hunting