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Old June 27, 2010, 02:07 AM   #31
Model-P
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Join Date: February 24, 2009
Posts: 727
I would also think that the powder itself might make a difference.

The proportions and milling on the commercial powders is very good and consistent. Back yard BP may end up having too much sulfer or insufficient milling, either or both of which would increase the likelihood of an residual ember. I have to wonder how many of the accidental ignitions are attributable to the use of non-commercial powders.
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