Went to Michigan for a black powder deer hunt.. thats a long story.. and I'll get back to you guys when I get a few minutes... I have been useing straight Fantastik , two wet patches, brush it good with brass brush, dry it out with a couple of patches... kill any remaining black in the bottom corners of the breech area with a good dose of (gasp) good ole gun oil, and this method has kept my flint rifles in good shape for 20 plus years... these rifles are ones I built from scratch parts.. green mountain barrels ,Pecetonika (spelling??) stocks, siler locks,, definitly not cheap rifles, and I would not risk ruining them..I do keep an eye on them, and have never had any rust.. I am also skeptical about not mixing wonderlube or 1000 plus with oil.. I think it is a selling ploy to sell more of that stuff... I use wonderlubed patch material, and It will keep shooting all day without cleaning as at rendesvous shoots, and have killed a dozen or more deer and antelope with patched round balls and wonderlube... but have always used oil as in petroleum oil in the rifles... no problems yet... best regards...Les