I use bushing dies for most of my rifle cartridges and avoid the use of an expander button all together. A quick brush in & out of the neck before sizing and necks are ready for reloading. However, I do have a couple of cartridges that I lube necks and then drag a button through. I'm undecided as to whether or not its beneficial to remove the lube (Imperial sizing wax) from the necks before reloading. A Redding tech guy told me that they never bother removing lube.
So for reloading in general; do you guys lube your necks or just run them dry as I do?
The Imperial Dry Neck Lube Convenience Pak.