4556 .357 Mag 4 HP .357 Mag, 4 HP 4 loose rounds of .357 hollow point ammunition. Although it lacks armor piercing abilities, it more than makes up for it with its damage potential. .357 Mag 4 HP These 4 rounds of Federal's own Hydra-Shok Jacketed Hollow Point comes complete with a complimentary speed loader when purchasing through this site. 1024 105 1 760 1 8 12 13 1 1 1 4 105 4 4 1