Re: Frog Lube
Latest test. Fired a bunch of corrosive 7.62x38R from the 1895 Nagant. Did not clean it, but only covered the bore, chambers and gun in frog lube and never heated it up. Stored in a leather holster and one month later there is no rust.
Today I removed all the carbon from the XD9 barrel, hit it with brake cleaner and put a patch of frog lube down the barrel and still got some black out.
This stuff is a great product.
My belief is stronger than your advice