Wanted to explain that a converted barrel could be used on a 2.75 gun. Here is a 2.75 1949 x series gun with a converted barrel on it that works great. All I had to do was take out a tiny bit of wood where the barrel hits the back of the Forend and the gun functioned perfectly.
I use all my 16 barrels on multiple guns now I just had to get several Forends that matched colors and alter a few of them. Hope this helps someone. I tried to explain it to a guy on another forum but he was confused, a bonehead or both