Howdy! Allow me to introduce myself through my Handi Rifle:
The first brand new centerfire rifle I ever purchased, back in 1983 when I was trying to grow almonds, was an H&R Topper in .357 Magnum. I mounted a Burris compact scope on it and used it about a year for shooting ground squirrels with some very quiet .38 HBWC handloads. I had fun with it, but in 1985 I traded it for a .30 Universal Carbine. This was a pretty good trade, but I began missing the single shot almost immediately. I kept missing it until 1995, when I finally ordered the brand new NEF SB2 in .233 that I still have today.
This rifle has been through a fair bit of customization. First I had the receiver hard chromed by Ron Mahovsky, and added a synthetic buttstock from Choate, along with both the standard and survival model fore ends. Then I bought two extra barrels through NEF in .22 Hornet and .357 Magnum. All three barrels were shortened; the .223 was turned down to a lighter profile, the .357 was rechambered to Maximum and chromed inside and out by Armoloy, and the Hornet was rebored and rechambered to .38 Super (and 9mm Largo) by the late Dick Nickel, parkerized and fitted with a Williams peep sight.
I've been thinking about buying a second SB2 someday soon and doing a couple more custom rebore projects. Dick Nickel passed away some years back, and my search of the archives under the keyword 'rebore' only turned up JES as a recent recommendation.
I may give JES a try, but for the sake of completeness, are there any other rebore services that any of you have used and can recommend?