Don't waste your money setting it back . Anyone that's played ( read , professional rebarreled) knows it's toast . 800 to 1200 rds with a 22-250 , even slow fire , will be a stick used for practice or reloading tool stock .
Get a new barrel , life is too short to spend time trying to get another 200 rds out of it .
This has been my experience with any set-backs, especially on over bore capacity cartridges like the Varminter.