Re: .270 Wby conversion to WSM problems...
Why? If it is not accurate, go through the cheaper fixes, like bedding or trying a different bullet, first. Rebarreling is expensive, and when you're done, you've got a short action magnum, with a long action rifle. You may need to modify the magazine, and the bolt, adding to the cost. It may be much better, if you can't get it to shoot, to dump it and get another rifle in 270 WSM, or whatever your cartridge of choice is.