This has become an exercise in futility...Building a double rifle from a shotgun is expensive, time consuming, and tricky at best....To start with the action should be re heat treated, that is softened and brought back to specs...The Brownings were the best I have seen for this and even they were not acceptable to me....

To build a double rifle, even in .22 cal. one should start with a good double rifle action...not cobble one up from a piece of junk, that will end up very costly anyway and then you have nothing...