Allen,

I've used a Pelicase 1750 to transport 2 weapons at once several times when I've needed to. And other smaller Pelicases for other needs.

What is important though is that the case is used correctly. Which means cutting out a hole(s) in the middle layer of foam to tightly fit your weapons. If this is done correctly, there is no way anything is going to shift.

Like shown below (in a slightly smaller 1720 case)

I have a couple of foam inserts to fit different weapons. A couple of extra layers doesn't cost much, and is worth getting if you have several different guns that you use.

They also make shorter cases that would be suitable for a double rifle that is in two pieces.

The Pelicase is relatively heavy though. But rather that than a broken gun IMO...

http://www.peli.com/cases.html

Erik