The Federal Premium Personal Defense Handgun Ammo 10mm 200 gr. HST brings the law-enforcement-proven HST series to civilians seeking reliable 10mm self-defense performance, with a 200 grain jacketed hollow point engineered to expand reliably through barriers while holding virtually all of its weight for controlled penetration without overpenetration; you get a service-grade load that meets the FBI test protocol used to evaluate duty ammunition, delivers a muzzle velocity around 1130 fps and roughly 567 ft?lbs of energy for stout terminal performance in a defensive handgun, and features nickel-plated brass cases and Federals dependable primer for consistent function in semi-automatic pistols. If you carry for home defense or keep a 10mm for serious defensive situations, this ammunitions barrier resistance and weight retention translate into predictable wound channels and retained stopping power where it counts, while its reputation as a worldwide duty load gives users confidence in real-world scenarios; made in the United States and offered by Federal, this HST load is an excellent choice when you want duty-level terminal performance from your personal defense handgun ammunition.