I've used it, great stuff, (cause I'm lazy I guess). I do the foam thing, 1/2 hour later I push it out with a patched jag, run another patch to dry, then use some butches, or shooters choice and run a couple of soaked patches on a fiber brush, dry it back out with some jagged patches then oil and put it up. I haven't had any moisture-rust problems with this cleaning method.