Ultimate Defense Features Remington s line of Personal Defense ammunition is engineered to help you stop threats when everything depends on it. Ultimate Defense Full-Sized Handgun ammo uses a Golden Saber BJHP bullet which expands and penetrates for massive knockdown power. From bullets specially designed for controlled expansion and optimal energy transfer to waterproofing and powders treated to reduce muzzle flash its reliable stopping power stands ready for when you need it most. Ultimate Defense Specifications Caliber: 40 S&W Model: Ultimate Defense Bullet Weight: 165 gr Rounds Per Box: 20 Casing Material: Nickel-Plated Brass Application: Personal / Home Defense Bullet Type: Brass Jacket Hollow Point (BJHP) Muzzle Energy: 484 ft lbs Muzzle Velocity: 1150 fps