I have never had an airline weigh my ammo. Once someone asked how much I had and I said 11 pounds, it was easily double that... One other time TSA called me to their inspection area because a box of slugs busted open and they wanted me to know they were taping it up for me. Atlanta had me pull a rifle from my hard case at the ticket counter and rack the slide to show them it was clear... that was extremely awkward...