I have carried a round of live ammo through in a carry on (unintentional) without issue, but that was in May 2001. Security was almost an afterthought at that time. Coincidentally, that was the last time I was on an airplane. I prefer not to be trapped defenseless in an aluminum can flying 600 mph with people who want to kill me. So I drive.
'Merica: Back to back World War Champs