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Old February 28, 2011, 09:11 AM   #9
tango1niner
Senior Member
 
Join Date: March 5, 2009
Location: NY
Posts: 316
Are you cold bluing out of a bottle, tube, etc. or hot salt bluing? I have hot salt blued mirror finished guns and had no problem. The salts do not coat but penetrate the steel .0003-.0004 and do not change sizes. The salts are a nickel salt from Heatbath corp.
As far as the pits are concerned, if they are too deep to be easily removed you could have everything bead blasted for a matte finish. Early in my bluing education I found if I did not remove or blast pits prior to bluing when the items came out of the tank the pits would actually turn a nice bright orange (rust) color after awhile. It was terrible, my almost black gun with orange pit pox.

ps. The blasting media I used at the time was: Potters quality Ballatoni impact beads
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