Powder Residue an irritant / allergen?
Do any of you have any sensitivities to gunpowder residue, or know if that is a common issue? A friend went shooting. A couple hours later they reported a mild case of hives. Not sure if it's related but agreed to ask. I've not heard of this before, and it's not clear something else didn't cause it.
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.50 BMG: 1 Shot 1 THRILL!