I own an old, bolt action,Webley and Scott .410 and I am considering having the chamber extended so it will take 3” shells and I would also like it re-proofed for steel. Has anyone had something similar done and could they recommend a good gunsmith that I could discuss this with? The gun is in excellent condition despite its age and has a a very heavy looking barrel which makes me think this might be possible. I appreciate this gun is not worth very much in terms of money but it has been in the family a long time and means a lot to me and i wish to “future proof” it. I do still occasionally use it and 3” cartridges would be more practical.