Hi Ridge Runner,picked up the tube yesterday,came as a two metre length ,going to reduce it by about a foot to see how it feels,the ammo
From Amazon has a bit of flash on it,so I will have to make sure the darts/bolts are sized properly ,if it is appearing to be a bit too on size I think I will ask in what increments the internal dimension go up in,as a ten thou increase in diameter will make a big difference to the results.
The door knob is/was a standard paxolin old type brown coloured one with a slight concave dish , I drilled it out to twelve mm ,and a mate down at my local engineering shop dished it more on the lathe, as soon as I can find the time I am going to have a play with it!
I have a few ideas I am going to try out work and weather permitting.Cheers Micky