Good morning people. Have a question for you shotgun guys and gals. I've got a Winchester 1300 pump gun with synthetic stock, known as the Black Shadow Turkey. It's got screw in choke tubes, but came with only the extra full turkey tube. I've been told that Mossberg tubes are compatable with Winchester tubes. Is that true, and do they fit flush? I can't find Winchester choke tubes, but Mossberg's are plentiful. So, what do you all say? Your responses are much appreciated.