Right here, although I don't know where I got it from. The 'chart' I printed out has been on the wall now for at least 15 years. It might have been on the wall
in the shop in the other house as well. I'll copy it out. Save and print it if you want.
These are stricken measures" Different "makes" of stricken measures, will throw different amounts, especially in different granulations & different "makes" of powder.
Best to check your measures with a powder scale.
The powder drams, lines up closely with the powder throws/drams equivalence charts:
Measure ------shot-----actual drams measure at marked weight
1/. 50gr. 3/4oz. = 1.83drms
2/. 60gr. 7/8oz. = 2.20 drams
3/. 70gr. 1 ounce = 2.56 drams
4/. 80gr. 1 1/8oz = 2.93 drams
5/. 90gr. 1 1/4oz = 3.29 drams
6/. 100gr. 1 3/8oz = 3.66 drams
7/. 110gr. 1 1/2oz = 4.10 drams
8/. 120gr. 1 5/8oz = 4.40 drams
1 dram = 27.3gr. To this day, most modern shotshell boxes still mark the loads in drams equivalence.
1/. 54.60gr. = 2 drams
2/. 61.40gr. = 2 1/4 dr.
3/. 68.25gr. = 2 1/2 dr.
4/. 75.10gr. = 2 3/4 dr.
5/. 82.00gr. = 3 drams
6/. 88.70gr. = 3 1/4 dr.
7/. 95.60gr. = 3 1/2 dr.
8/. 102.4gr. = 3 3/4 drams
9/. 109.2gr. = 4 drams
10. 116.0gr. = 4 1/4 drams
11. 123.0gr. = 4 1/2 drams