This is just a question for those that know why doin't screw in rifled choked tubes work in double 12 or 20 bore side by side is it just that the barrels are not regulated or they just doin't work? seams that it should be as good as the paradox guns of the past and you woud be able to take the rifled choke tube out and replace it with one for shot and have the best of both worlds.
TomN