I've used the old steel 66 on Winchesters and it is a very good sight, head and shoulders over the Williams Foolproof. At the time I was playing with the 30-30 to 550 yards and the 66's best quality was you could change elevation simply by pressing a release button. If you had previously locked the zero screw, all you had to do was release the slide and lower it to the stop. Your POI went back to its initial setting.
The old steel 66s are bringing silly money- more than I've paid for well used 94 Winchesters in the past ten years.
People were smarter before the Internet, or imbeciles were harder to notice.