I spent just about fifty years gunsmithing and still do some. I never made a ton of money at it but did OK. The very best arrangement I ever had was having my shop in a busy gun store to which I paid a fixed percentage. In return for their percentage, the store took in work , collected the money and remitted my share. Although I did a fair amount of gunmaking, my money came from general repairs and alterations. The store got all profits from parts sales and they maintained inventory. I bought my own tooling. Paid the sales staff a commission on work taken in on my behalf. I dealt personally with any customer disputes, which were rare in any case. For a time, I had shops in two stores but this spread me too thin and I had to work harder to cover the cost of my employee gunsmiths. Their idea of a productive day was reading through the Brownells catalog.
During this period (about fifteen years) I worked on an average of about 1800 guns a year. I would re-barrel a couple of rifles per week, Install a dozen recoil pads, Glass bed four or five rifles, install some muzzle brakes. tune up some revolvers, clean and oil a bunch of Remington 1100's, install some chokes, weld some bolt handles, drill and tap some rifles, and so on. Memorable high earning days included one where I did trigger jobs and some repairs on 25 S&W Model 10's for a police department. I charged 30 bucks apiece and did them all in one day. Another day, I re-barrelled six rifles, at 125 bucks apiece, in eight hours. Muzzle brakes were a huge money maker. I charged 100 dollars labor and could usually figure on doing seven or eight in a day. Since this was in the late '80's, I was making good money and I had a large number of regular customers as well as the general hunting public. I always tried to make my money via productivity rather than high pricing or selling unnecessary work. The downside was, for fifteen years, I seldom got to go hunting during prime time.
Today, I make my money from our campground and gunsmith for personal gratification. The gunsmithing landscape has changed a lot over the last thirty years, and I don't think I would want to try making a living at it today. In comparison, the campground is less stressful and I get more exercise!
There are a lot of very good gunsmiths and gunmakers who are also astute businessmen, and who make a very good living at it. Some are members here. I have nothing but admiration for them. WH