Re: Gunsmithing
A gunsmith is a person who repairs, modifies, designs, or builds firearms. IMO, there is a big difference between a person that threads, chambers, and screws a pipe on a rifle action and a gunsmith. Many gunsmiths do not have lathes and mills but still make a living customizing, cleaning, refinishing, and repairing firearms. Do you need a $100K CNC machining center to build accurate guns...no way. It helps getting it done faster and makes it easier to reproduce repeatability but it’s not essential to small groups. Most any machinest that can read a blueprint can rebarrel a rifle.
A good mechanical aptitude and understanding of some math goes a long way to help troubleshoot problems. Having a good library makes it much easier to work on something you know nothing about. Exploded parts views help identify and fix a basket case gun. You will find that manuals give you basic knowledge that you can expand on.
Totally disassemble a gun and put it back together. Learn how things interact and why they are designed the way they are. Learn why guns don't work or shoot well, not just jump into re-furbish one with new barrel and stock. Start to do some upgrades with trial and error. Don't monkey with a part that is not replaceable or super expensive.
Never compromise safety to get it a little bit better. Gunhacks create a lot of business for gunsmiths.