Bushveldt,
Thank you for the reply.
What you write is my strong suspicion and the route I am likely to take.
I am weighing the costs and merits of having preliminary work done Stateside.
Some barrels are sufficiently pitted that they may need sleeving. Perhaps it would be better to have a UK view on that prior to undertaking any work. I have had Nigel Teague do similar work resulting in chamber sleeving while preserving original Damascus barrels in a very nice classic Horsley. None of the current projects are of that quality though.
Thanks again for the perspective; I will weigh your advice.
Jeremy