My measurements are the same as yours with adg brass. I’m using redding bushing die. Case was sticking on extraction. I had the chamber honed an polished.
So far, problem solved.
I'm shooting a savage lrp-dbm in 308. I don't shoot anything but 168 berger. I'm averaging 2750 fps with varget 46 gr. I tried 46.5 gr and started to have primer issues.I also coat all my bullets with Tubbs boron nitride...This load is very accurate in my rifle. You have plenty of knock...