RD Show,

Is it feasible to put a set of rifled tubes in a Valmet O/U shotgun? They are made to take interchangeable shotgun and rifle barrels such as 30/06 and 9.3X74R. Since they are of monoblock design, could a set of barrels be inserted into the monoblock after removing the smoothbore shotgun barrels?

I have an extra set of 12 GA shotgun barrels as donor barrels.

Allan