Wait, are we talking rifle or pistol brass here?There is a residual wax on the brass from the car wash.
This of course is no substitute for properly lubing for sizing. When I run pistol brass, there is a smoother stroke when flaring and crimping/tapering in the dies.
That would make sense if sizing pistol brass in carbide dies without lube.
I was thinking rifle brass. Perhaps that was not the case.