I agree with Nomercy. I have a Koplin hard plastic case that is a double rifle case. It'll hold both my .22's (with scopes). It happens that it was supposed to come with a soft case (or maybe 2 I don't know for sure), but it didn't have one so I got a deal on it. I guess the idea was like Nomercy said, just in case they do slip they have a little extra protection. Anyway, that is likely what I would do with it.

I'm also thinking of the take-down shotgun cases(like for over-unders that have a compartment for the reciever and one for the barrels) I know it wouldn't work for your gun, but something like that would be excellent if you could make it, or have one made. Of course that would be a matter of time/money.