Quote:
Originally Posted by tlay
It is normal for them to check for explosives in this manner. I have a prosthetic leg and the first time they did it I was not happy. But I understood why and they were polite. I also reload and shoot a lot and was concerned that they might pick up some kind of gunpowder residue but it has never happened.
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Smokeless powder is a propellant, not an explosive. The airport sensors aren't calibrated to pick it up. They have no reason to. As others have said, they are mainly looking for nitrates.