Ultramax .357 Magnum 180 grain Jacketed Hollow Cavity Pistol Ammo 20 Rounds. 357 Magnum 180 grain Jacketed Hollow Cavity Pistol Ammunition: Manufacturer: Ultramax Caliber: .357 Magnum Number of Rounds: 20 Bullet Type: Jacketed Hollow Cavity (JHC) Bullet Weight: 180 grain Application: Target Package Contents: Ultramax .357 Magnum 180 grain Jacketed Hollow Cavity Pistol Ammunition What is Ultramax .357 Magnum 180 grain Jacketed Hollow Cavity Pistol Ammunition good for? The manufacturer suggests that it is suitable for target.Ultramax ULT-357-2-N: .357 Magnum 180 grain Jacketed Hollow Cavity Pistol Ammo 20 Rounds