Even the Lee Collet die benefits from contouring and polishing the mandrel. Forster and Redding usually don't need it but I may polish anyway. Other dies SOP. I use Hornaday One Shot spray lube and if it seems to need it I brush the case neck with motor mica. This is probably not needed but if there is a lot of carbon it may reduce this and I think it minimizes the drag from the expander ball if used and makes bullet pull more uniform. It also eliminated "cold welding" or oxidation of the bullet and case.
"When you disarm the people, you commence to offend them and show that you distrust them either through cowardice or lack of confidence, and both of these opinions generate hatred." Niccolo Machiavelli
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