Thanks for such a detailed reply.

Yes, my mistake octagonal is what I meant

Reason I mentioned the fibre optic front sight is because I looked at one on a Chapuis DR and it REALLY glowed. Did look a bit fragile I admit...

Sorry, I'm not familiar with a 'reamer print'... do you mean an accurate cast of the chamber using Cerrosafe or similar?

I'll keep a lookout for an early 70's No 1... kicking myself though as I was at an auction about 12 months ago when a Leupold scoped No1 in .270 with a stunning fiddleback stock went for just A$650.

Of course that was *before* I thought about this project... will keep you posted on progress!