I had one done several years ago by a now defunct gunshop in Texas. I sent them the gun, they rechambered it to 221FB, recrowned the muzzle, reassembled and headspaced it and returned it in one week. Cost: $110.00. That barrel shot great. Only problem was it wouldn't feed rounds from the magazine. I put a single shot follower in it and proceeded to kill many thousand Prairie Dogs with it.
Charlie