I finally finished my 6.8 Black Rain upper build with ARP barrel and JP Enterprises bolt. The rounds below are from the first time shooting the rifle. The are factory S&B rounds (green box). I noticed swipes or marks on the case head. Is that normal? Some actually gouged the head and pushed a small amount of brass up into a sharp edge as you can see in the picture below. I did not check the head space, don't have the gauges. Not sure if this is a head space issue or just normal wear. The marks look like swipe marks which usually indicates a max power load.