Magtech 9mm Luger 147 Grain Subsonic Jacketed Hollow Point Brass Cased Pistol Ammo 50 Rounds. Typi cally offered in heavy for caliber bullet weights these loads also provide reliable function through suppressed firearms. Specifications for Magtech 9mm Luger 147 Grain Subsonic Jacketed Hollow Point Brass Cased Pistol Ammunition: Manufacturer: Magtech Caliber: 9mm Luger Number of Rounds: 50 Bullet Type: Jacketed Hollow Point Subsonic Bullet Weight: 147 grain Cartridge Case Material: Brass Muzzle Velocity: 990 ft/s Application: Self-Defense Package Type: Box Primer Style: Centerfire Package Contents: Magtech 9mm Luger 147 Grain Subsonic Jacketed Hollow Point Brass Cased Pistol Ammunition Magtech 9K: 9mm Luger 147 Grain Subsonic Jacketed Hollow Point Brass Cased Pistol Ammo 50 Rounds