Federal Premium, Hydra-Shok Deep, 38 Special +P, 130 Grain, Jacketed Hollow Point, 20 Round Box P38HSD1 Federal's Hydra-Shok Deep builds off the time-tested platform with design improvements that better meet modern performance measurements. Their bullet features a more robust center post and a core design that penetrate to optimal depths through the barriers most commonly encountered in self-defense situations.