Winchester Ammo Centerfire Handgun Reloading 9mm .355 115 Gr Full Metal Jacket Flat Base (FMJFB) 500 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 Flat Base (FMJFB) Bullet Diameter: .355 Weight: 115 Gr Core Material: Lead Quantity: 500 Per Box