Toby, now that makes real sense....sadly I don't have a drill like that. I've given up, rather wisely, and given it you a chap I know at William Evans (One of their gunsmiths) and he has said he'll see what he can do! If he can it should be back with me in 3-4 days.

I'm one for trying and then giving to someone who has the tools to do the job properly. It'll give me time to get the kit to get it sorted next time.

Cheers
T