[George Foster]

I have been using Hoppes gun oil for years now in the barrels of my rifles. I recently found it had congealed, (It had dried out and I saw it in the lands) in one of my barrels and I had to clean it out. I am leaning toward just using Kroil from now on but I would like what others use.

About 20 or so years a barrel maker told me the best thing you could do to cut down on copper fouling was after cleaning a barrel was to run a oil patch through it and not clean it out before firing the rifle. He told me starting to shoot with a clean barrel with no lubrication was a good way to get copper fouling.

 

[TinMan]

I have used an oil for storage for years, but recently I have changed a few things around. I used to use a mix of No.9 and Marvel Mystery Oil for cleaning bores. For CF rifles, now I use Kroil for cleaning, dry patch, finally a coat of Lock-Exe for storage and for better first shot accuracy. For actions and bolts, I like Tetra oil and grease, which is Teflon containing. I don't use it in bores. For pistols, I like Eze-Ox for both bores and actions. It has a dry film lubricant in it. For storage, on the outside of blued firearms, I like RIG grease.

 

[Trapper6L]

Not to degrade anything that anybody uses but Kroil is a penetrating oil and the film does not last long. You have to be careful about what you use, like anything with Teflon in mix as it draws moisture to it. Any resulting gaps in the film will have rust growing.
I'm not going to say what I use is the absolute best but what I use is designed for the protection of metal surfaces in the oil field industry. I'm still sitting on some of the old Exxon Rust Ban 392. It coats the surface with a translucent film that dries and stays on the surface of the metal, keeping any moisture or oxygen off of the metal. It's not made any longer but sometimes you can find it on Ebay. The replacement product would be Techyl 894. It works the same way. That covers any gun that I'm not going to use for at least 6 months. Otherwise, Hoppes does a decent job on short term for keeping rust away. If you have a gun that you are going to put up for extended periods(years), you can cut lithium grease with mineral spirits and paint it on the entire metal surfaces. Let it dry for about a week and if possible, either vacuum seal it in a bag or wrap it as tight as you can with a plastic wrap to seal out air. The bitter part of air is the oxygen. Oxygen is what causes rust. Any of the industrial protectants must be removed before you use the gun again. Kinda like taking a gun out of cosmoline.
For gun oil, there's only one I will use, that would be military LSA weapons oil, medium, MIL-L-46000. This oil does not break down and stays on the job. It works in temps down to minus -60F to 260F. The semi-liquid comes with a lithium stearate thickener and a barium dinonyl-naphthalene sulfonate as a corrosion inhibitor. This gun oil is designed for the military from the ground up to work and stay on the job in conditions your guns will never see. A 4oz bottle can last most users for decades. A little goes a long way.
https://www.gunpartscorp.com/products/281390

 

[JC in Calif]

I have been using Clenzoil for quite a few years now. It cleans and lubricates and isn’t harmful to wood or synthetic stocks. After cleaning my barrel, I run a patch with Clenzoil through and let it stand for 20-30 minutes. I run two dry patches down after that. It just leaves a sheen from thin coating of oil that remains. I have never had a rust problem. I use it on exposed metal serfaces also.A bottle lasts me a long time, as it only needs to be used sparingly.

 

[acrow]

Gun metal lube

I use nothing but EEZOX.

Lost my house to a flood a few years ago. Guns were submerged for about a week and I couldn't get to them for another week. NO rust. Problems with wood, but that's mostly under control now.

Tools & other things that were coated with EEZOX had n o rust either.