Rebarreling/breeching a No 4 MkI.

[tbonesmith]

Here is an article by a member here, Peter Laidler: http://photos.imageevent.com/badgerd...ching%20Up.pdf
Check out the rest of his articles: Index of Peter Laidler's on-line series of articles.......

I recently did a rebarrel on a No4 using a heavy target barrel out of an M17. Have a look at the thread: No 4 7.62 build

Most of the complexities are shown in that thread I linked above, but if you want to get technical send me a PM and I'll give you my phone No. Fundamentally it's the same as any other rebarrel, where the receiver face breeches up on the shoulder of the barrel tennon.
The original barrel can be extremely tight and difficult to remove, and I have found it necessary many times to make a relief cut just forward of the face of the receiver in the barrel, to relieve the tension held between the face of the receiver and the barrel shoulder. Though sometimes they come out without difficulty. That's out anyway so no drama's there.
Also don't assume that they will just shoot with a nice barrel, every other part of the setup and bedding is critical to performance.
What caliber is the barrel you have bought? And is it threaded for a No4 already or something else?


... And welcome to the site, I hope you find a lot of what you're looking for here.