I've had the luxury of being around manufacturing for many years. All the way from minng operations, through Taconite facilities, to steel mill, Coke Batteries, rolling mils, stamping plants, roto forging facilities, hammer forging facilities, tool shops, job shops, modeling facilities, inspection houses, QC, all the way through paint and general assembly.
When I say "good enough", it's between the acceptable low, and the acceptable high specification.
When is a barrel too thin? When is it too thick? In between is good enough. There may be other parameters, but, essentially, every parameter has a set of brackets.
Multi layered damascus barrels undoubtedly (in my mind anyway) benefited from layering. Same with the twisting of the ribbands bringing benefits
