Well JFZ, here's how I do it. Not saying that it's the right way. When I purchase a new pistol, it gets a field strip cleaning, barrel, slide, recoil assembly, firing pin and its channel, extractor, etc. I like to make sure that all the oils and machining residue, if any, are gone. If it's a revolver, I scrub the barrel and the cylinder. Then it's off to the range. If it's a "pre-owned pistol or revolver, then it's a complete dis-assembly and cleaning before a trip to the range.