Never bought any batches of brass before. Just picked up 1000 rounds of .45 ACP once fired brass (mix of Federal, Winchester and a few dozen misc others). I figured it would be safer to purchase once fired .45 ACP instead of .40 S&W of 9mm. Anyway- several rounds wouldn't fit in the gauge which was a surprise to me as I've refired many of my own brass without this issue (maybe fired from a Glock because of large buldge), one round had a split about 1/4" long. I'm no expert but I'm pretty certain it wasn't all "once fired". What has your experience been? Some brass had dings or scratches which I assumed was acceptable (like hits from the slide, etc.). A couple Win NT and a .45GAP mized in for good measure.