They advertise as using once-fired brass. However, I have always been leery of this and here is why...While looking at their page, I noticed the cartridges of the same caliber/headstamp had two different colored primers. This means that someone has possibly been tinkering (reloading). My face is worth more more to me than saving $15 on 100 pieces of brass. Not trying to criticize these types of sellers...I just wondered if they truly know it's once fired. I have nothing against asking the guy next to me shooting factory ammo. if I can have his brass if he doesn't reload. However, if I pay for brass, I'm buying from a Cabelas or Midway for a few $$$ more.