Hardigg Storm Cases and Pelical military grade gun cases are strong enough to pass major drop and other tests. (Look at the rather neat weaponry they show in their ads.) Bad news is that they weigh a whole lot and aren't anywhere near cheap. Still, given that airline baggage handlers train for the shotput with your liggage and the cost of a hunt, it's probably not a bad deal. Alas, I think you still have to put TSA padlocks in the holes and those aren't very theft resistant. Or, does anyone know a source of strong TSA-coded locks???????