With the band fitting into the forestock I could drive it onto the barrel. A good clean and a light smear of Imperial sizing wax was enough to help get it up to the desired point where it is a very tight no slip fit. It took a little to drive it the last 1/2 mm but a brass block and going round the band got it sorted. Of course I did set a level on the action bottom to get it right in the vise and then checked the bottom of the band nut to make sure as I went forward.

The machine screw that had been with it needed a little shortening and the back of the head re-shaped to mate with the counter bore in the forestock but eventually it all came together.

Then the excess width was bandsawn off