Do just want a modern caliber barrel installed or bring it back to original? The reason I ask it doesn't take much skill to in stall a barrel.
The friend I use is no well known name but has always done me right. Just slow. But he knows I'm not in a hurry and as a friend he doesn't charge me near enough.
How about a picture of the gun?
Also to you want a new barrel put on or a liner installed?
Here's a picture of a Ruger #1 that was a 30-06 that I had him convert to a 22LR. We kept the original Ruger barrel and installed a match grade 22LR liner. He lowered the original firing pin to hit on the 22LR rim. It shoots one hole groups at 25 yds. for a custom squirrel rifle.
I just got my custom Winchester 52 back from him. He made me a rear scope base to fit in the receiver sight cutout so I can install a modern scope. Notice the custom double set triggers. The rifle was put into a Stoegers 1930's custom stock and the triggers were probably installed at that time. With a modern scope it'll be another of my special squirrel rifles.