What type of load are you using? I have found that Unique does not completely burn in reduced loadings. I don't have a problem with it in full power loads in .38 and .357 with lead bullets. Also, how many times have your cases been loaded? If they have been loaded a few too many times, it may cause incomplete combustion because of the lack of neck tension. I had this problem once.
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"Son, you just might get that fancy gun out of that fancy holster before a fella with an ol' fashioned sixgun blew a hole in ya."-John Wayne "Big Jake"
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