Barnes Harvest Collection ammunition is the ultimate in thin-skinned game hunting ammunition, powered by Sierra’s revolutionary Tipped GameKing, delivering unmatched accuracy and devastating terminal performance. This .300 Winchester Magnum with 180-grain Sierra Tipped GameKing bullet is intended for hunting medium to larger game where long-range performance and reliable terminal behavior are priorities. Listed ballistic data for this loading include a muzzle velocity of 2960 feet per second and muzzle energy of 3503 foot-pounds, with a published ballistic coefficient of 0.547.
Each round is produced with boxer-primed, reloadable brass and is non-corrosive, making these cartridges ideal for reloaders and shooters seeking premium factory ammunition. The Sierra Tipped GameKing features a polymer-tipped boattail bullet with a highly uniform jacket and a hollow cavity in the lead core behind the polymer tip. The cartridge combines Barnes’ loading standards with Sierra’s Tipped GameKing construction to provide consistent ballistics and controlled expansion across typical hunting ranges. Each box contains 20 rounds.






