Unfortunately I do not have Early Shotgun Concentrators and Spreaders: The First One Hundred Years of Invention to Control the Flight of Shot published by Gary Muckel in 2009

I came across this notice in the December 5, 1896 Sporting Life ; "rotary shot spreader"
https://digital.la84.org/digital/collection/p17103coll17/id/46545/rec/1

[Linked Image from photos.smugmug.com]

Jan. 5, 1901

[Linked Image from photos.smugmug.com]

In 1902 Brown offered an improved spreader device "The Hummer"

[Linked Image from photos.smugmug.com]

Sept. 13, 1902

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Sept. 10, 1904

[Linked Image from photos.smugmug.com]

U.M.C. introduced their "Short Range Shells" in fall, 1904
https://books.google.com/books?id=n-gcAQAAMAAJ&pg=RA6-PA57&lpg

Sept. 24, 1904 "powder gas is introduced into the shot charge"? no wad? hole in the wad?

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Dec. 31 1904

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