With the wads that have been developed for steel shot there does not seem to be any problems with the barrels all the way up to the chokes. At the choke is where problems can occur. There are many factors that come in to play here such as barrel steel hardness,choke angle, constriction and shot size. If the barrel starts to bulge at the choke in a double it can lossen the ribs. I personaly would shoot steel in an older steel barreled double but would have the best choke tubes installed that were steel shot compatable. Preferably the kind that have their greatest constriction occuring after it leaves the barrel. Some guns may not be able to have tubes installed cause of barrel wall thickness so then if you want to use that gun you will have to use tungsten matrix or bismuth.
