Turn-of-the-century Live Bird and Inanimate Target shooters used some boomer loads.
January 2 1897
Charles Grimm defeats Doc Carver in Chicago for the “Cast Iron Metal”.
Grimm used a 12-bore L.C. Smith gun, 7 3/4 pounds, 3 3/4 drams “Schultze”, 1 1/4 ounce No. 7 shot, in U.M.C. Trap shell.
Carver used a 12-bore Cashmore gun, 8 pounds weight, 4 drams of Carver powder, 1 1/4 No. 7 shot, in U.M.C. Trap shell.
The standard Live Bird load c. 1900 was 1 1/4 oz. 3 1/2 Dr. Eq. (1275 fps) BULK Smokeless with pressures about 11,750 psi; 1 1/4 oz. 3 1/2 Dr. Eq. DENSE Smokeless was about 12,600 psi.
The modern SAAMI 12g maximum 2 3/4" and 3" pressure is 11,500 psi
Competition guns were limited to 8# (not including recoil 'boot' or hand guard) and recoil with those loads would be about 27 ft/lbs.
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