Bullets are custom-designed and manufactured to precise specifications to deliver specific on-target performance characteristics. These characteristics vary depending on bullet design. Features: Caliber: 40 S&W Model: Centerfire Handgun Series: Reloading Bullet Diameter: .400 Bullet Type: Full Metal Jacket Truncated-Cone (TCFMJ) Core Material: Lead Jacket Material: Copper Quantity: 100 Per Box Weight: 165 gr