Federal Premium Hydra-Shok has proven itself for self-defense since 1989. Hydra-Shok Deep builds off the time-tested platform with design improvements that better meet modern performance measurements. The bullet features a more robust center post and a core design that penetrate to optimal depths through the barriers most commonly encountered inself-defense situations. Hits optimum penetration depths through barriers encountered in self-defense situations Iconic center post design has been improved for better more consistent expansion Specially formulated propellant Extremely reliable primer Modern defense ammunition option for 32 H&R Cartridge-optimized to offer the best terminal performance for 32 H&R with controlled expansion that provides the perfect balance between expansion size and penetration depth