I know about not firing lubed rounds because of chamber grip and headspace so my question
The argument there was lube your cases and not worry about head space of the chamber and clearance.
I want nothing between the case body and chamber but air. I do not want a lot if air. Air works, it if fluid, it flows and it can be compressed. Unless air is contaminated with grit, dirt and or grime air is not abrasive. If my cases have lube on them dirt, grit and grime can imbed into the lube; for that reason I choose not to leave lube on the case.
I want my case to lock onto the chamber. I do not want my case moving; I off set the length of the chamber from the shoulder of the chamber to the bolt face with the length of the case from the shoulder to the case head.
There were a few bench resters that thought it was a good to lube cases when they fire formed. I disagreed. Then there is the Japanese machine gun that was a failure unless the cases were lubed. Because of all the sand, dirt, grit and grime kicked up during bottle I believe the Japanese would have preferred not to use lube on all those sandy beaches. The Japanese machine gun fired about 7 rounds a second’ our 30 cal Browning ran about 8 rounds a second without lube.
Discipline when reloading; I tumble then lubes then size then tumble the cases again. Then there is the mistake made when lube is left on the case during storage. Again, I want nothing between the case and chamber but air.
F. Guffey