There’s a fascinating thread on the Outdoors Directory forums. The author, who goes by the splendid forum title of ‘Rancid Crabtree’, bought (at his own expense) 46 products used for firearms cleaning and lubrication, of which 33 were specifically intended for this purpose and the remainder were general-purpose products also recommended for firearms. Here’s part of the collection (click the image for a larger view).
He then put all of the products through an exhaustive series of tests, far more comprehensive than anything I’ve seen elsewhere in the user community. He even set up multiple boards of metal strips treated with each product to see how soon corrosion would set in, and tested them under both indoor and extreme outdoor conditions. Here’s one of them after a week’s exposure. (Again, click the image for a larger view.)
At the end he compiled a ‘scoreboard’ of how the products compared to one another, and came up with a list of three products that far outshone all of their competitors. I was frankly surprised to see some of my long-term favorite products so comprehensively outdone. I can assure you, the moment I’d finished reading his evaluation I ordered a supply of one of the ‘winners’ to evaluate it for myself.
I think the author has done the entire shooting community an enormous service with his testing. If you’re serious about keeping your firearms in good order and condition, and safeguarding them from corrosion, then frankly his thread is a must-read. I highly recommend that you take the time and trouble to read it in full, because later comments add details to (and sometimes modify) what was said earlier. It’s an eye-opener.