Scroll down about 1/3 for turn-of-the-century U.S. maker hang tag load and patterning information
https://docs.google.com/document/d/1F2sQuPm05IE4VWYYnCkvuXmYEzQoWd_SQgaAfUOZEFU/preview What Bro. David said:
After about 1906 the Smith 12g guns, unless otherwise requested by the purchaser
(Should the sportsman desire a gun to make a pattern peculiar to his needs, we can bore them to suit. ) were patterned at 40 yds. using a 30 circle with 3 Dram and 1 1/4 oz. Tathams chilled No. 7 1/2 shot (345 pellets per oz./431 pellets in the load). Black Powder or Bulk Smokeless were not specified on the hang tag.
