Cutting Edge Bullets Personal Home Defense 9mm 90 Grain Solid Copper Hollowpoint Brass Rifle Ammo, 20 Rounds, PHD 9MM 90

After 1.5 - 2in of penetration four blades are engineered to shear off and radiate out in a star pattern while the Blunt Trauma Base continues to penetrate 14 - 16in in ballistic gel. This action greatly increases trauma and stopping power.