I knew a guy once knew took (2) 9mm rounds through the naked security scanners in his back pocket.
There was a big hoopla, the pimple-faced, 17 year-old TSA agent held them in his sweaty hand as he sheepishly asked, "Are they Live" My friend had explain to him that although they were live, they weren't going to explode his hand.
The TSA boss came out who had lots of important questions like, "Do you have any guns on you?"
Finally, the Troopers came and asked a ****-ton of questions, checked to make sure my friend didn't have any outstanding warrants, and pocked the rounds.
Luckily, I didn't get arrested & even still made my flight.