One more question. Can a fixed smoothbore Winchester 120 Ranger 12ga deer slug barrel be tapped on the end to accept choke tubes? If so, could it be tapped to accept chokes other than the Winchoke system. For example, could it be tapped to accept Browning chokes or Remington chokes instead. Would be nice to use same barrel for deer and turkey- being able to use rifled choke or xfull choke would be great. If possible, is this a very difficult thing to have done? Also, what would a reputable gunsmith charge for this service? Anyone had good results with a particular gunsmith or have recommendations for a good gunsmith? Thanks. 