The Browning travel vaults are actually made for them by Pelican.
You can see various Pelican cases at most photography stores, like B&H Photo in Manhattan, or some times at boat stores like West Marine. But Photo is better.
Ray's in Union had some Browning cases the last time I was there, but I'd call first.
My opinion: nothing made by any other manufacturer comes close to the durability. They're also a lot more puncture resistant than an aluminum case like a halliburton.