Bluing questions

I have just bought a 15X unertl for a good price. It is mechanically fine but probably went a few years without being wiped regualrly with oil. It has small specks of surface rust here and there. A piece of Scotch-Brite cleans it up, but also removes the thin blue finish.
I know I can send it off to Parsons scope service, and I may do just that, but I want to know if I could use some sort of cold blue and be reasonably satisfied with the results. I got a good buy on the scope, and a professional job would definately be worth it, but I'm looking into options of a DIY without taking the scope apart. I just got this Unertl, and really don't want to spend any more, or wait for turn around at this time.
Anyone have experience bluing a vintage scope?

I've never had luck with cold blue. Sure, it covers up a bare spot, but I never could get it to match well. It helps if you can heat up the part you are blueing, but I don't know if that's a good idea with a scope.

I've sent both Unertl and Lyman scopes to Parsons, and have been very happy with the results.

Agree. Cold blue looks and smells like cold blue. It works pretty good for hiding a small spot, but never looks good trying to cover large areas. 4/0 steel wool and oil would have worked better for removing the rust.

Have been using a product called G-96 for years. The greatest stuff since sliced bread. Can touch up or redo whole small parts. It comes out black-blue, the more applications, it becomes more black park looking.

I believe they have a web site somewhere. They also make some great gun oil too.

What was the turn around time on the scope you sent to Parsons ?

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What was the turn around time on the scope you sent to Parsons ?

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It was several years ago, and I don't remember; a few weeks? It was worth it though, and having your scope professionally refinished will help its resale value. And Unertl's have excellent resale value. :D