Winchester Ammo WB40Tc180X Centerfire Handgun Reloading 40 S&W .400 180 Gr Full Metal Jacket Truncated-Cone (TCFMJ) 100 Per Box Bullets Are Custom-Designed And manufactured To Precise specifications To Deliver Specific On-Target Performance characteristics. These characteristics Vary depending On Bullet Design. Winchester carries a Variety Of Component Bullets For Both Centerfire Rifle And Handgun Ammunition. Bullet Type: Full Metal Jacket Truncated-Cone (TCFMJ) Bullet Diameter: .400 Weight: 180 Gr Jacket Material: Copper Core Material: Lead Quantity: 100 Per Box