I would like to thank Dr. Stephen Wardlaw,
the author of the following articles, 
for his permission to reproduce them.

The questions:
Can a static spark set off black powder?
Why Does a Short-Started Ball Cause a Barrel Bulge?
How accurately can a ball be cast, in terms of repeatable weight?
Would like to read more about the man who has written these articles?  Here ya go!
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Cliff Hanger's