There seem to be a host of high temp cements, epoxies, and various other coatings that may very well fill in pits. Some of them may be more costly than a new gun I suppose, but perhaps several have some utility for this purpose.

http://www.sauereisen.com/ceramic-assemb...FBoCuiEQAvD_BwE


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BrentD, (Professor - just for Stan)

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