greener shotgun barrel threads

[enfield]

does anyone know the thread pitch, size on the barrel of a greener mk111 shotgun. I assumed it would be 1" like a martini henry but it's closer to 1 1/8 . I wanted to make a bushing and turn it into a BP toy.

[The Double D]

If you have a Greener Shotgun you have the answer in your hand. In order to make the bushing just measure what you have.

I have a Greener shot gun and two barrels and they measure 1.080 x 14Vtpi and 1.075 x 14Vtpi