Shot a couple of boxes of CCI Blazer and my buddy noticed a few of the spent rounds are indented twice on the end of the casing perpendicular to the bullet edge directly across from each other. Of course I can't find them to take a picture and show you, but they were very noticeable - I'd say close to 1/8" deep. Of the 100 rounds about 6 had the indentations. For what it's worth, we were shooting at moving targets 6 rounds/5 secs and I've never seen my gun do this with brass. Total round count is probably 450-500. Since there are 2 indentations, could the round be getting caught between the top/side of the ejection port on the slide and the barrel because maybe the ammo is underpowered?