Blued frames being made right is really dependant on the way they were polished before bluing. As Mr. Campbell stated, poor quality methods could have been used to prep the frame for bluing.
Removing bluing, polishing and case coloring is surely an option for any frame.
Another route is simply removing the bluing. Usually doing this will leave a matte gray finish on the frame which, although not great looking it is better than bluing. If a gun is not worth the expense and time to put back to 100% right, sometimes just removing the bluing makes things look a lot better.
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B. Dudley
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