Buffalo Bore Ammunition Subsonic 9mm Luger Subsonic 147 Gr Jacketed Holl. While this ammo is full power it is standard pressure and falls within the SAAMI guidelines of 35000 PSI for use in ALL 9mm handguns suppressed or otherwise and will not cause accelerated wear in your firearm. This 147gr Gold Dot bullet will mushroom in mammalian tissue at impact velocities as low as 800 fps and will penetrate roughly 20 inches. This is enough penetration to incapacitate even very large men that are heavily clothed and are struck at bad angles. For those wanting an easy shooting full power standard pressure 9mm load that will penetrate deeply and is designed for all 9mm pistols this is it. Specifications for Buffalo Bore Ammunition 24I/20 Subsonic 9mm Luger Subsonic 147 Gr Jacketed Holl: Manufacturer: Buffalo Bore Ammunition Caliber: 9mm Luger Number of Rounds: 20 Bullet Type: Jacketed Hollow Point (JHP) Bullet Weight: 147 grain Cartridge Case Material: Brass Muzzle Velocity: 1000 ft/s Application: Protection Primer Style: Centerfire What is Buffalo Bore Ammunition 24I/20 Subsonic 9mm Luger Subsonic 147 Gr Jacketed Holl good for? The manufacturer says that it is good for protection.