Went shooting this morning. Fired of 50 rounds of my new load, which is: New Starline Brass CCI 300 primer 14.0 gr's of Accurate Arms #9 180 gr Hornady XTP COL = 1.26 inches Stock Glock barrel All 50 rounds fired just fine, nice and accurate and I never noticed a hiccup. After I collected all my brass, I found these two guys: Splits are in the middle, and don't go all the way to the top. I worked up to this load, and everything seemed fine. No flat primers, no excessive bulges. As you can see in this photo, the split is happening on the side of the case as it is chambered, not top or bottom. I don't have any experience reading primer strikes on Glocks, but I think it is occurring on the right side of the case, if you were looking down the gun just as if you were aiming. I don't see these as flattened primers. I know flattened primers aren't the best way to judge over pressure, but I am not seeing any crazy bulges either. Everything seems fine, other than these two splits. Are these rounds over pressure? Is it weak brass? While using my Lee factory crimp die, am I crimping too hard or not enough? Any thoughts or answers will be appreciated.