@OP: I do hope you realise that, so far, you have managed to snot a couple of the top guys in the field. If you are asking for free help, that's really not the best policy.
A lot of us in this forum are concerned when somebody decides that they want to make something "special" out of an old military rifle. To most of us, it conjures up images of a collectable rifle in wonderful internal condition which has been destroyed by some utter CLOWN who thinks that he knows better than the people who designed and built the thing. We see rifles like that all the time. To most of us, they are a source of spare parts and nothing else. Any of the HERITAGE, the HISTORY of these fine instruments has been lost.... or just thrown away.... because some IDIOT thought he knew more about Lee-Enfields than James Paris Lee and RSAF Enfield put together, some JERK figured that Peter Paul Mauser didn't know very much about Mausers. The poor things get covered in plastic and genuine Chinese knock-offs of the wonderful M1913 Picatinny rail, mounted with lasers and rangefinders and huge telescopes which are not appropriate to the rifles..... and then scrapped because they won't keep up with a super-spiffy modern Match rifle.
They were BATTLE rifles, COMBAT rifles that MADE history.
They were designed and built to strike man-sized targets at combat ranges out past 1000 yards..... and many of them were built nearly a century ago.
They were never designed for impressing the heavy dudes with the $16,000 shooters, although a few of them can.... and do..... manage it.
If you really MUST do this, get yourself a CG-63. They are Swedish military Mausers in 6.5x55 which already have been converted into Match rifles by some of the best gunsmiths in Europe.
Just don't start in wrecking yet another original.
THAT would make us all cry.
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