Sierra GameKing Bullets 270 Caliber (277 Diameter) 130 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. This bullet produces the same terminal performance as the 130 Grain Pro Hunter but is better suited for long range with its boat tail design. Technical Information Caliber: 270 Bullet Diameter: .