You can look for a good-used .38-55 barrel as well as doing a rebore. I disremember if it's Numrich Arms or Gun Parts Corp, but they might have one.
I've found good-used Model 94 barrels at the smaller gun shows in New Mexico and Arizona. I was looking for a Type 1 .30-30 at the time; $45.
You're from BATFE? Come right in! I use all your fine products!