https://books.google.com/books?id=inQCAAAAYAAJ&pg=PA178&dq

1 1/8 oz. No. 6 shot with 3 Dram C&H Black Powder or 42 gr. Nitro with 30" barrel MV

No. 2 (Fine Grain) BP - 1122 fps; 34" barrel 1147
No. 4 BP - 1114
No. 6 BP - 1051
"Schultze" - 1113; 34" 1119
"E.C." - 1106; 34" 1120
"S.S." - 1110

"S.S." (Smokeless Shot-gun) was a Bulk Smokeless powder made by Smokeless Powder Co. It was discarded as loading with higher charges of powder produced significantly greater pressures than "E.C." or Schultze.

Pressures + 10 - 14%



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