I have a Pelican and simply love it. It managed to make it from home to Windhoek and back to JFK with no problem. Somehow between JFK and SLC the JetBlue guys managed to break one of the latches off. Pelican promptly send a new one and it was a simple fix. The wheels are nice and it's never been a big issue with the guys at customs.
I have only done the African trip twice. Both times were with my gun and my father's gun in the same case, bolts removed stored right next to the rifles. Each of us packed a 60-round ammo box into a single, locking, rectangular Pelican along with spare clothes, bipods, and other bulky low-value stuff. If anyone freaked out we could have easily transferred the bolts to the ammo container.