Originally Posted By: trshootemWhat you see is the color of Kroil residue left behind in the bore. Great stuff for cleaning, but certainly not a rust preventative. A rust and lubricity study done with a number of products indicated Hornady One Shot won on both counts.
I can't locate it at the moment, very interesting results. Kroil for getting under the copper fouling, a proven rust inhibitor in the bore and an exterior wipe down for longer periods of storage.
Here's the article you are referring to. The two videos are in the article......
http://www.guncleaningtips.com/the-best-gun-clps-corrosion-and-lubrication-tests/
