Sierra MatchKing bullets have very thin jackets and are held to exacting tolerances in diameter and weight. These Hollow Point Boat Tail bullets have a small meplat to produce a higher ballistic coefficient. Their accuracy has been acclaimed worldwide and they have been used to win more target competitions than all target bullets from other manufacturers combined. The 30 Caliber 175 Grain MatchKing was developed along with military experts for use in the M21, M24 and M40A1 sniper systems. It then generated a large amount of interest by long range competitive shooters due to its high ballistic coefficient and ability to remain supersonic at 1000 yards out of a 308 Winchester. This is not loaded ammunition.