Sierra MatchKing .22 Cal (.224)Hi-Vel 77 gr. HPBT Match Box 500 Designed for Service Rifle competition in the M16A2/AR-15A2, our 22 caliber bullets have set an incredible number of new national records. The 77 grain #9377 MatchKing© allows seating to an OAL that permits cartridges to be loaded into M16/AR15 magazines. While they are recognized around the world for record-setting accuracy, MatchKing© and Tipped MatchKing© bullets are not recommended for most hunting applications. Although MatchKing© and Tipped MatchKing© bullets are commonly used for varmint hunting, their design will not provide the same reliable explosive expansion at equivalent velocities in varmints compared to their lightly jacketed Hornet, Blitz or Varminter counterparts. The #9377 bullet is available in a cannelured version in box sizes of 500 (#9377G) or 50 (#9377GT). This bullet is also available moly-coated (#9377M). This bullet requires a barrel twist rate of 1x8? or faster