I've heard of a number of cases lately that was tracked down to a carbon build up not too far forward of the chamber. Takes a bit of moving, with the right products. Apparently some powders are more prone to it than others.
I've heard of a number of cases lately that was tracked down to a carbon build up not too far forward of the chamber. Takes a bit of moving, with the right products. Apparently some powders are more prone to it than others.
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