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OpenStudy (anonymous):

At a distance of more than three feet from gun to target, there will generally not be signs of gunpowder on the target

OpenStudy (roadjester):

@shorty321 so what's the question?

OpenStudy (anonymous):

what chemical is used to develop gun powder residue @roadjester

OpenStudy (roadjester):

If you wait long enough maybe someone will know; either that or google it. If not, go to the Chemistry group. Those are my suggestions.

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