I use the Boyt takedown cases. The medium will also hold a broken down Blaser R 93 and a scoped bbl.

However when I go to Africa I use a different system as the takedown cases and 2 full length cases is just too much weight.
I bought 2 full size guncases long enough to take apart the double, put the bbl in one end, the reciever in the other and fold the case in half. That way my rifles are broken down and less likley to have a broken stock. When hunting I then have 2 full sized cases.