If I stop looking at the pictures of Rons guns for long enough the capacity for rational thought returns slowly to me.

As a first project I think the Hornet is a very sound and useful selection. So I will begin assembling the necessary parts.

Because the top barrel is holed it will have to be sleeved but the bottom barrel could work with a liner or insert.
This would certainly give us a greater range of techniques to try out but I would be happy to get your thoughts on what would work best or be easiest (KISS Vs Murphy).

As this project becomes a reality I am just starting to realise the full extent of my ignorance and lack of knowledge - so your suggestions and expertise are massively appreciated and please keep the suggestions coming.

Question:
If an insert is centrered at the breech and at the muzzle of the of the host barrel is it possible to fit an eccentrically bored collet on the thinner middle part of the liner that can be rotated to provide a means of regulating the point of impact?
Presumably the distance of the collet from the muzzle would also affect the angle of deflection?

If any of you are UK based and are planning to visit the CLA Game this weekend it looks as though the weather is going to be hot and it would be a real pleasure to offer you a cold beer on the Hunting Agency stand on Gunmakers Row

Once again thanks for your help on this.

Mike