The Solid Core is an extremely hard, flat-nose lead bullet that holds together while blowing through bone, providing high weight retention and deep penetration. Syntech polymer jacket technology reduces the friction and leads that plague hard cast bullets. Series Hunting Caliber 9mm Luger Application Hunting Bullet Type Solid Core Synthetic Flat Nose Bullet Weight 147 gr Muzzle Energy 409 ft lbs Boxes Per Case 10 Rounds Per Box 20 Casing Material Nickel-Plated Brass Muzzle Velocity 1120 fps Unit Of Measure box