I highly recommend Hart Rifle Barrels. They worked over a Remington 700 in 7mm Rem Mag for me putting on a new barrel. It shoots amazing now. It took almost a year, though. I put in a deposit to get in line and they called when they were ready for me to send the rifle. I was only without the rifle for a couple weeks.
Just for reference, they are not affiliated with RW Hart in PA. I know I had some confusion about that when I was looking.
-David
I believe Hart Rifle Barrels only does barrel work. Which is why i recommended getting the Accurizing from RW Hart as Bobby provides all encompassing gun smithing to optimize Long Range Shooting. Lastly, while they are not affiliated they are relatives.
Look up whose rifles and barrels are setting the short and long range bench rest world records. You won't see LRI, GAP, or any of the other handful of shops crammed down your throat over on Snipershide. Do your own research. Theres plenty of good gunsmiths out there that do outstanding work at reasonable rates.