There is no reason to ever load 38 Super hot enough for the spent cases to look like this. This is pain just waiting to happen. These were picked up after a USPSA match.
It's hard to tell from the photo, but the bulge at the bottom could be due to something other than overcharge. There is a possibility that the reloading seating die is set incorrectly and is crushing the case but not enough to keep it from chambering and being fired..