A rolling block action is very springy, and doesn't handle pressure well! I think what you might mean is a FALLING BLOCK ! A falling block double rifle like the Ruger No1 is strong as anything chambered for a sporting cartridge.

It would take some re-design to be a workable double rifle, but could be done! I've been working on a re-design of the basic Ruger No1 into a double rifle for some yrs now, in the drawing board stage as of yet, but refined enough now to go forward with a soft metal shop prototype to obtain a pattern for the parts.

This type double rifle is, like the bolt action double rifle by Fusch, it will not sell well, because of it's very un-treditional looks, no matter how strong it is! My design is a more treditional in looks, and in the way it works! We will see later this summer!