Federal Premium .357 Magnum 180 Grain Syntech Jacket Solid Core Brass Centerfire Pistol Ammo 20 Rounds. This 357 magnum Ammo designed by the experts at Federal Premium features a flat-nose bullet that is formed from extremely hard high-antimony lead alloy to hold together while blowing through bone and penetrate deep. Federal Syntech Ammo uses a special polymer jacket to reduce friction and leading without features like wax rings and gas checks. So feel free to buy and use this excellent 357 magnum 180gr Syntech Jacket Solid Core Centerfire Handgun Ammo when you are in need of some powerful bullets that are sure to handle all of your range needs. Specifications for Federal Premium .357 Magnum 180 Grain Syntech Jacket Solid Core Brass Centerfire Pistol Ammunition: Manufacturer: Federal Caliber: .357 Magnum Number of Rounds: 20 Bullet Type: Solid Bullet Weight: 180 grain Cartridge Case Material: Brass Muzzle Velocity: 1400 ft/s Application: Big Game Package Type: Box Primer Style: Centerfire Lead Free: No Gun Type: Handgun Package Contents: Federal Premium .357 Magnum 180 Grain Syntech Jacket Solid Core Brass Centerfire Pistol Ammunition Federal P357SHC1: Premium .357 Magnum 180 Grain Syntech Jacket Solid Core Brass Centerfire Pistol Ammo 20 Rounds