MatchKings are the pride of the Sierra bullet family, unmatched worldwide and truly world class in all respects. Competitive shooters have relied on the consistent accuracy of Sierra's MatchKings for decades, resulting in a history of state, national and world records that is the envy of our competitors. Sierra offers the widest selection of 30 caliber match bullets in the world today, producing bullets suited to nearly every form of long-range competition.The 240 grain #9245 bullet is currently the heaviest 30 caliber MatchKing in Sierra's line. This bullet was developed several years ago as a sniper bullet for the 300 Winchester Magnum cartridge. This 240 grain bullet is difficult to stabilize, requiring a barrel with a 1x9" twist rate in all the 30 caliber magnum cartridges.Although they are recognized around the world for record-setting accuracy, MatchKing bullets are not recommended for hunting. Please Note!! This bullet requires at least a 1x9" twist barrel.