I got caught in Wichita with a shotgun shell in my backpack. I pheasant hunted that morning and drove straight to the airport. Checked my shotgun with my luggage at the counter and walked to TSA wearing my backpack which I thought I cleaned out. They pulled me out of line at TSA and asked if it was my backpack which I said yes. They asked a series of questions and took me to a room. When they pulled the shotgun shell out of my pack I just knew I was going to jail. A different guy came in and asked a bunch of questions to see if my story changed. He then told me it happens all the time during hunting season. They let me go and I still caught my flight.
I had another situation after shooting prairie dogs on a different trip in Wyoming. We shot like crazy for several days. I had a flight out a day before anyone else and was wearing jeans a shirt , a ball cap, and a jacket. I got randomly swabbed at TSA. I set off every alarm there was. Every article of clothing I was wearing tested off the charts for I’m guessing gun powder. They pulled my checked bag and same problem. Took nearly all day to sort that out. Missed my flight had to reschedule for next day.
