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I had Wilson Combat do their Armor Tuff Finish on my two Beretta's. I don't have a ton of rounds through them but they are still doing good.
How about Titanium Nitride?
Rig grease might be the solution for you on top of the barrel hood. It has served me well in some difficult rust situations.I cleaned the 229 last night (200 + rounds thru it last weekend). Used Break Free, Ballistol and denatured alcohol to clean the barrel, then a light coating of EWG 2000. Back in the safe in a Remington pistol sock. I'm going to monitor it for a couple of weeks before making a decision on refinishing it. The only thing I did differently was using the Ballistol (trying a sample).
After doing some reading, it appears the PVD processes (TiN, TiCN, etc.) are some of the best choices for a refinish on the barrel.
If the rust does not reappear, I'll be a Ballistol user for life. If it returns I'll be looking for a more permanent solution.
Most curious that the rust only appears on the flat surface on top of the barrel. The "smile" on the barrel and the bore have never formed any rust. I need to use a bright light and a magnifier to do a closer inspection of the slide, but I don't think that's the culprit.
Rust never sleeps.
I just talked to a local shop that does this kind of work and he does not recommend doing the barrel. Cerakote does not stand up well enough but NP3 will as it is actually bonded with the steel.The finish on the top of the barrel of my 229-40 has worn off. I cannot keep light corrosion off of it. Yes, I've tried everything under the sun. It keeps coming back.
1994 with about 30,000 round thru it. I don't want to replace it, it's incredibly accurate.
Thinking of having the barrel (exterior) cerakoted, but I'm not sure of the the wear. Has anyone on the forum had a barrel cerakoted? How is it wearing?
Thanks for the info.