Yes, I had 9mm ammunition in my purse. Completely forgot to take it out, just a few hollow points, not a case load or anything. Nevertheless I was pulled aside and questioned about it. Thankfully I had less than 10 bullets in my purse. The agent advised that if I had 10 or more I would have been detained.....so you can have 9 but not 10.... that's our first line of defense's policy.