What I tell guys who want to have Ruger's rebarreled is that if it shot well originally, then it's worth having it rebarreled. If it never shot well, get rid of it. I've trued a few Ruger's single point rethreading or did do one with a Manson tap (it took one to ruin the tap), enough to decide not to ever do anymore of them. It's very hard to decide how to set them up to get them running true when it's difficult to find a spot on the bolt running true enough to indicate them. They are what they are investment cast receivers and bolts which make a functional hunting rifle, but very seldom a very accurate long range rifle. They do come up with an accurate one every once in awhile and those are the ones that will benefit by rebarreling.