The last person around Indy that I know of, that re bored/sleeve barrels was George Perkins, up in Fishers/Noblesville area.
He was a MASTER Gunsmith that has been gone for 5-7?? years...Bill.
Jesse has a Marlin 336 of mine now and I should be getting it back any day now. I'm having it rebored from the original 30/30 to 38/55. Will probably be sending him a sporterized M1903A3 to rechamber/rebore to 35 Whelen.
I've had the Marlin 336 I had rebored back in my hands for a few weeks now and today I was finally able to get to the range. After sorting out a problem with the rifle as it came from the factory, the front sight was loose in the dovetail, the rest of the trip was flawless. The gun feeds and ejects flawlessly and I managed to shoot a 1 1/2" group at 50 yards its open sights and while wearing bifocals. My single vision glasses were in my other range bag.
I would recommend J. E. S. Reboring to anyone wanting to do something like this to one of their rifles. He offers several calibers and does work on lever, bolt, pump, and single shot rifles. I have a sporterized M1903A3 that may become a 35 Whelen sometime in the near future.