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I got my tax stamp/approved form1 back for the 2" brit mortar a while back and finaly freed up a little time to make a new bbl .
I started with a piece of 4130 tubing 2" ID 3" OD and turned the proper profile, then cut the 2.1"x4tpi acme thread to screw on the original base . Nothing left now but to machine a new firing pin and work up a few practice rounds .
I set the bbl up on the 4 axis mill and cut the proper 84 notches that allow the bbl to turn on but not unscrew, will post a pic in a day or two and hopefully a vid clip of it in action
Here are a few pics
I started with a piece of 4130 tubing 2" ID 3" OD and turned the proper profile, then cut the 2.1"x4tpi acme thread to screw on the original base . Nothing left now but to machine a new firing pin and work up a few practice rounds .
I set the bbl up on the 4 axis mill and cut the proper 84 notches that allow the bbl to turn on but not unscrew, will post a pic in a day or two and hopefully a vid clip of it in action
Here are a few pics



