A hard hitting round featuring a solid copper expanding bullet. 100% weight retention and extreme expansion make this one of the best defensive bullets available! This is probably the the best personal defense load in existence featuring 16.25" of penetration and .86" of expansion. Caliber: 10mm Bullet: 125gr. LEAD FREE SOLID COPPER HOLLOW POINT Ballistics: 1600fps / 710ft/lbs - Glock 20 1450fps / 582ft/lbs - 50yds. Glock 20 1501fps / 626ft/lbs - Glock 29