As we speak, I have hand drawn sketches, that are 3 months old, trying to figure out how to retrofit the trigger assemblies with a single double set, should someone try to fix two handi actions together. Have to splay the hammers outwards also.
Figured the easy way is to build a double rifle off of stronger sxs shotgun actions.
But H&R would have saved me a lot of effort, to date, if they had a double 30-30.
(Tell me you wouldn't buy one and use blackpowder loads and cast bullets in it for deer)