Bill,

I read Larry's post twice and, even though I have welding rigs, I never did what he described and that is how it will remain. It is more than 3 feet over my head. Whatever.

Adam

Best gun ever!!!
 

Bill and Adam, Notice how I started the reply. This is not beginners project day. And I forgot one thing that can be very important. If the opening for the lugs and extractor is okay, mill a square for each side to keep those races from closing too much.
I would love to tell you who gave me this information, but he might feel it was given in confidence. I know it is not a set-up on his part. He is not that kind of a guy.
I had this happen inadvertently when I was welding up the bathtub on the rear bridge of a model 14 Enfield. Had a hell of a time getting it back to where the bolt went in and out okay. I had purchased a "dewar" several years ago just to see what all could be done with them to make them good. You end up with a Magnum length action capable of the 416 Rigby but it is a "bunch" of work. That P14 can really be opened up for the big ones, as can the P17. The P14 has some advantages. Happy welding and milling. :)