Triple Se7en

I do not see the the test that way at all. Thesepieces of bare metal, like the bore of your barrel, exposed to the conditions (atmosphere). Your bore is exposed to the atmosphere just as these metal plates were unless you are sealing both ends of the bore or putting them in a hermatic vault.

The plates were exposed as is the bore, but I assume the plates were lying flat while your bore is usually verticle.

As I have said, I have used wd-40 on the steel tops of the table saw, jointer, shaper, and other tools for years - both inside and outside - it sure has worked in the shop.

I have never stored a barrel for long periods of time withwd-40, so i can not make a comparison. My centerfires are all stored with a coating of gun grease in the bore, becauseI just do not use them anymore.The bolts have been sprayed withRem-oil - but it is looking likemight be better to use wd-40.

I am surprised that Breakfree CLPdid not do better - just because itis thicker, but maybe it does not displace water that well.