Center Balanced Systems manufacture a range of nifty bull-pup conversion stocks for Mosin Nagant, SKS, AK-47, Saiga-12, Remingon 597 and Mossberg Plinkster with a Ruger 10/22 kit coming soon.
I asked the company if the Mosin stock would make a difference to perceived recoil. They told me that the surface area of the butt is 50% greater than a stock Mosin, so if shouldered correctly, the recoil should feel tamer. I really like the idea of putting an old war-horse like the Mosin in a fancy bullpup stock!
Price vary and the order lead time is eight weeks. More info at their website.