Defense Dynamics cartridges are built with the same quality cases, hulls, powders, and primers that experienced shooters have come to expect from Fiocchi ammunition while employing projectiles proven to deliver the kind of terminal performance you demand in a personal or home defense round.Specifications: Brand Fiocchi Category Centerfire Handgun Rounds Caliber 9mm Luger Model Defense Dynamics Bullet Weight 147 gr Rounds Per Box 50 Casing Material Brass Application Personal Defense Boxes Per Case 20 Bullet Type Jacketed Hollow Point (JHP) Muzzle Energy 310 ft lbs Muzzle Velocity 975 fpsAR15Discounts.com is your source for bulk wholesale 9mm Ammo.