OP here, and thanks for the comments. I'd like to stress the fact that I'm not knocking the Ren Wax, and I do not doubt that micro crystalline is a great product for firearms, I'm just trying to take it a step further to see if it is the "best" for the actual metal part.

For me, the biggest reason for waxing, is moisture protection / rust prevention, and that is the reason for experimenting with the car & instrument waxes.

As for the NRA museum, that's great, and I would not doubt that paste wax works well, but for museum pieces in a climate controlled room, moisture & condensation are probably not an issue. I don't expect museum guns to be taken out in the rain and snow on hunting trips, or carried for 12 hrs in a leather holster or in pants pocket soaked with sweat, rain, mud, etc. To them, it may have been more important to have one product that works well for metal, leather, wood, and paper, rather than the moisture barrier that I'm looking for.

Glossy Tundra, my can of Calif Gold says "cleaner wax" on the can, but I did try it on an old gun, and it worked great. The abrasives aren't coarse enough to scratch, but I suppose it could wear a finish thin if you rubbed enough, so the pure carnauba is what I want to try. No need to spend $100 at the Harley shop, the guitar wax in my original post is pure carnauba for about $6 a can.

My next experiment will have to wait until the weather warms up. I want to compare the different waxes on the trunk lid of my car to see how they compare. I encourage anyone to try whatever non abrasive car wax you have on a gun frame and see how it feels when you wipe it down with a microfiber or flannel cloth, and let me know what you think.

JP