Liberty's patented lead-free high-performance ammunition combines a significantly flatter trajectory, immediate synchronous spin, optimization for gyro stability, and yaw independence contributing to superior ballistic coefficients and improved accuracy extended range. Series Protection Caliber 10mm Auto Application Home Defense Bullet Type Lead Free Fragmenting Hollow Point Bullet Weight 60 gr Muzzle Energy 780 ft lbs Boxes Per Case 50 Bullet Coating Nickel-Plated Rounds Per Box 20 Casing Material Nickel-Plated Brass Muzzle Velocity 2400 fps Unit Of Measure box