PA Reb, the whole point of my post is that even when they were made "the way they used to be", they had canted barrels!
I had an M&P from 1922 with a slight cant in the barrel, as well as the 581's from 1982-83 with noticeable cants. I'm sure if I broke out the micrometer many if not all of my older S&W's would have cants in the barrel. I also have a 1978 64-3 with a forcing cone that was fitted too tight. Not every older S&W is perfect either.
S&W makes them to be "within spec", and we pay $6-700 for them. If everything was perfect to within .0001" they would cost $2,000 or more and S&W would no longer be in business. If we're not happy with a gun, we can send them back.
My Dodge Magnum came with a bad transmission mount from the factory, so under warranty it was repaired. Was I ticked off? Sure I was, I paid $35k for a car with a defect. But, it's not a hand built Maybach, it's a mass produced assembly line made vehicle. Mistakes and errors do happen. New cars have uneven body panels, and other cosmetic imperfections.
If you want absolute perfection, you need to spend $10,000 for a hand built Korth.