Remington High Terminal Performance .357 Magnum 158 Grain Semi-Jacketed Hollow Point Centerfire Pistol Ammo 20 Rounds. 357 Magnum 158 Grain Semi-Jacketed Hollow Point (SJHP) rounds. From these rounds loaded by Remington themselves every grain of the Remington High Terminal Performance .357 Magnum Ammono is bonded with pure copper until you achieve the double-diameter expansion you're looking for. Plus the brass cases are all re-engineered to be tighter than ever before to ensure you get the most reliable cycling possible. These rounds are sure to deliver some serious firepower to take down targets on the hunting grounds or in emergency situations. Stay alert and prepared to handle any mission in any environment when you have rounds of this reliable Remington High Terminal Performance .357 Magnum Ammo in your pocket. Specifications for Remington High Terminal Performance .357 Magnum 158 Grain Semi-Jacketed Hollow Point Centerfire Pistol Ammunition: Manufacturer: Remington Caliber: .357 Magnum Number of Rounds: 20 Bullet Type: Semi Jacketed Hollow Point (SJHP) Bullet Weight: 158 grain Cartridge Case Material: Brass Muzzle Velocity: 1235 ft/s Muzzle Energy: 535 ft-lbs Application: Personal Defense Package Type: Box Primer Style: Centerfire Lead Free: No Gun Type: Handgun Package Contents: Remington High Terminal Performance .357 Magnum 158 Grain Semi-Jacketed Hollow Point Centerfire Pistol Ammunition Remington 22231: High Terminal Performance .357 Magnum 158 Grain Semi-Jacketed Hollow Point Centerfire Pistol Ammo 20 Rounds