www.casesbypelican.com
make sure you get something thats solid, very solid! and dont fly united if you can avoid it.
I had some one from baggage in united try to break into my gun case this year, problem was they tried it to every single one of us on the plane. Like 8 other people. they are notorious for damaging cases. The cabelas/BP wont hold up to the abuse in my opinion.
Also, get some dam good locks!! be ready to open them for TSA but once they check it put those locks back on!