bigbrad53
Well-Known Member
A doner barrel would have to be shortened on chamber end, threaded, rechambered, and contoured. All could be done buy any one who does barrel work.From what I am reading, the shank is smaller on a 340. Somewhere in the .850-.875 range. A 1.060 barrel could be turned and rethreaded. Of course, the straight section would be longer once turned.