Most of my pistol brass is indoor range pick up so its not that terribly dirty - I dry tumble, lube and load my 9 and 45. I use some lube just because everything flows a little easier on the dillon that way even with carbide dies, I've loaded without lubing and it works too. Ive debated depriming then cleaning, lubing and loading but not sure Id gain anything other then spending more time doing the work - for pistol at least. For Rifle I am strongly considering adding a wet media cleaning set up, cleaning, lube, size & deprime, trim and chamfer, clean, lube and load. This is still up in the air whether I spend the extra time and energy & if it would yield any superior results for me.