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Old May 25, 2012, 06:35 PM   #22
GP100man
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Join Date: August 1, 2007
Location: Tabor City , NC.
Posts: 1,923
It`ll last a good while , some powders like WW-231 have graphite already & will keep the hopper black looking indefinitely !

I have added a 1/2 teaspoon to a # of HERCO with no ill effects !!
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