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Old March 5, 2013, 06:38 PM   #7
Senior Member
Join Date: November 6, 2001
Posts: 1,022
It's going to really mess up your ultrasonic fluid. I use some odorless mineral spirits on a rag to cut the black sealant from the necks of the brass and also the tar left on the bullets. I wouldn't trust the old powder but if you think it's ok I wouldn't load them back to 49-50 grains but would cut back to 46.5-47 grains.
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