Beretta make a double rifle on their OU action, but they beef up the action when they do. Cole had a .30-06 (used) for sale a while back for about $2400, which is a lot less than the cost of buying a Beretta shotgun and sending it to a custom shop.

Bottom line, if I wanted a Beretta OU rifle, I would just buy one. Safety, resale, and quality of rifle would all be better IMO.