Some may disagree with me, but I would never put case lube anywhere inside a case. If lubing inside the necks are needed, I use one of the mica or graphite based lubes currently available.
Yes, case lube would affect neck tension and would affect powder ignition.
I do want to clarify that I am talking about petroleum based lube for resizing the cases in steel dies. The spray type that evaporates quickly is OK
Last edited by chiefr; November 30, 2012 at 03:46 PM.