The hang tag on my 1922 Elsie indicates that 1 1/4 oz of chilled 7 1/2 shot behind 3 drams equivalent was used at the factory to pattern my shotgun.

What were the loads used to pattern 2 3/4” 20 ga and 2 3/4” 16 ga?

Can anyone share photos of hang tags?

All my hang tag images are 12g and I hope someone can post a 16g or 20g.
The pattern % was marked into the late 1930s. Marlin marked the constriction ie. Mod and Full.

Standard loads found on L.C. Smith hang tags:
12 gauge 3 dram 1 1/4 oz. shot (1887 - about 1920 then 3 dram 1 1/8 oz. shot)

16 gauge 2 1/2 dram 1 oz. shot (introduced 1896)

20 gauge 2 1/4 dram 7/8 oz. shot (introduced 1907)