My Bodyguard has 350 rounds of Hornady American Gunner 90 gr. XTP through it 100% flawless. HOWEVER; pocket-sized pistols are ammo finicky. So with that in mind, when I took it to the range the first time, I tried several different types and brands. My Bodyguard was not 100% reliable with anything but Federal, Winchester, Remington, or Hornady. I does not like foreign ammo ( hard primers, steel case, slightly thinner cartridge bases). I now feed it a steady diet of the Hornady and not one issue of any kind. One more thought; pocket pistols like to be clean and well oiled with a fine oil like Rem-Oil. I like .380 pocket pistols and have owned a Kel-Tec P3AT, Kahr P380(still own), Ruger LCP. They have all been "ammo sensitive". So far, I like this Bodyguard the best