HUMMM...guess I better be more careful when buying used brass.

If I'm selling brass and call it once fired it means just that - it has been fired once, before that it was a factory loaded round of ammo.

I've passed on brass where it was "once fired" and when I got there to pick it up no primers and the brass looked pretty aged. I just look at that as not being completely honest. However I know to ask more questions now.