Fred M
It's been years since I had any contact with the machine shops I grew up near but at that time, several shops did gun work and rechamberings. I guess it's become more of a specialty business then before. I can imagine how some rechamber jobs can be rather lengthy and involved but in high school, I can remember a student rechambering a Savage 30-30 to an Ackley cartridge. He did it within 5, 45 minute periods with the teacher's help but he left it chucked in the lathe. We made parts for small engine repair, drilled barrels for scope bases, made naval truck cannons. I can just imagine a rifle barrel going to school today!!! Yes, you are right, knowing how and doing it is two different things........I just wish I had a lathe in my garage.