Decades ago I was going through the process and had a waterproof box with cigars and a plug cutter that was just an empty case from a 7.62 x 54 and the primer was removed. The inspector clueso of the totally stupid a$$}{0£€$ hauled Me off to the side for a 25 minute Q&A because of it.
While I'm going through that I watched 4 ragheads stroll through the checkpoint with out even slowing down...
perfect...