PDX1 Defender Features Engineered to maximize terminal ballistics as defined by FBI test protocol PDX1 Defender ammunition provides maximum stopping power for the ultimate in personal defense. Our innovative bonding process welds the jacket to lead core for improved penetration 1.5x expansion and the proven performance you rely on when the stakes are high. PDX1 Defender Specifications Caliber: 45 ACP Model: PDX1 Defender Bullet Weight: 230 gr Rounds Per Box: 20 Casing Material: Nickel-Plated Brass Application: Personal Defense Bullet Type: Bonded Jacket Hollow Point Muzzle Energy: 432 ft lbs Muzzle Velocity: 920 fps