LowI read somewhere that there were issues with the brass but can't seem to find it again.
I ran Rockwell B scale testing on the base of the brass faced off at the top of the flash hole. Numbers runs in the mid 50,s. About half hard. Not good. Good hard brass in that area runs in the low to mid 90,s. Explains the ejector extrusion visable with medium loads. I've tried to talk to someone @ Peterson, but this is a holiday week. Maybe more later or next week.