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Old November 23, 2008, 09:22 PM   #5
James K
Join Date: March 17, 1999
Posts: 24,129
No cold blue will be as durable as hot tank blue. The gun or part will look good for a while, but after some use, the bluing will wear off and the job will need to be done over. I long ago gave up on trying to use cold blue on anything but small parts like a buggered screw head.

Jim K
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