Sierra GameKing Bullets 284 Caliber, 7mm (284 Diameter) 150 Grain Spitzer Boat Tail (100pk)GameKing Bullets are designed for hunting at long range, where their extra margin of performance can make the critical difference. GameKing bullets feature a boat tail design to bring hunters the ballistic advantage normally found with match target bullets. The 150 Grain 7mm GameKing is an excellent choice for a lighter bullet in any of the 7mm Magnum cartridges. Technical Information Caliber: 284, 7mm Bullet Diameter: . 284" Bullet Weight: 150 Grains