Sierra Matchking .22 52GR Hpbt 100 PackMatchKing. For rifles, the 52 grain #1410 bullet offers the shooter all the advantages of a boat tail design for 200 to 300 yard competition. The #1410 is appropriate for rifles with 1x12" or 1x14" twist rates. In handguns chambering cartridges in 22 caliber, the 52 grain #1410 MatchKing bullets often deliver superior accuracy in target competition. Although they are recognized around the world for record setting accuracy, MatchKing bullets are not