Been working up powdercoat loads for my 30.06 and 303 British. I have shot nice tight groups with normal lubed and gas checked boolits where the bore riding nose just kisses the top of lands. The same boolit when powder-coated adds +0.006" to the nose diameter and won't chamber.
Pistol boolits don't appear have the same issues except in a Marlin Cowboy 45 Colt
10 shot with lubed boolit