Pelican cases are the best!
Many moons ago, I worked for an airline and a couple of years of that was cleaning up situations after somebody's baggage was lost or damaged.
Have you ever walked through a K-Mart, Costco or Wal-Mart and seen the luggage they sell? that's pretty much what I found mangled, ripped, broken, crunched or otherwise. Airline luggage shouldn't live such a rough life, but the sad fact is they do.
Out of all those bags, I never had to fix or replace a Pelican case. Never. They've been dropped, smacked, piled on, run over but never broken. They've received scuff marks, dirt marks and other personality traits to make them look less pretty, but they did their job and protected their contents.
Plus they're used very extensively by other industries such as professional photography crews, businessmen who have their convention presentations in them, Tech departments that ship computer parts in them. So if you fly people won't give your case a second glance nor think there's a firearm in it.
So I bought a pelican case, and I havn't flown with it and treat it with all the gentleness I can, but I know it can take the rough stuff if needed.