Patrick. Good call! I have just looked at the rifle again. The bore appears to be straight and is indeed left hand twist and the wood is not warped. I think it is all down to poor rear sight bed fitting, although I cannot understand the offset ,machined "V" being present, which obviously makes things worse. With the ladder up it leans to the left.! So we have a cap with an offset "V",and the whole sight bed and ladder leans to the left ! It is a wonder that it actually hits the target at all. It`s a complete mess and now you have told me that it should all be straight I can do something about it. I should really remove the sight bed and correct the whole thing. Luckily I can do that sort of work,but I may take an easier path and just offset the cap to compensate. That would be OK for short range work. .I suspect that the sight bed will be soldered and screwed on. That will be fun to get off! Thanks for the info. I did not want to start sorting it until I knew what it should be like.