How hard would it be to go into businesses making firearms. My interest in life is mainly shotguns I just love em. And im starting college sometime this year probably a machine class. The teacher there builds guns in his spair time. He even built a bolt action 50 bmg the action and all except thevbarrel since he didn't have that particular price of machinery. I've been reading about computered assited design and type 7 ffl. I also thinking look at ithaca all they are is basically a shop turning out shotguns. Overpricex I might add. How do you proof test barrels and what not?