1890 American Shooting Association Rules handicapped based on gauge
https://archive.org/stream/fieldcovertrapsh01boga#page/458/mode/2up No limit on powder
In
single bird (target) shooting the rise shall be:
Eighteen yards for ten-bore guns; limit 1 1/4 oz.
Sixteen yards for twelve-bore guns; limit 1 1/8 oz.
Fourteen yards for fourteen and sixteen bore guns; limit 1 oz.
Thirteen yards for twenty-bore guns; limit 7/8 oz.
In
double-target shooting the rise shall be:
Sixteen yards for ten-bore guns.
Fourteen yards for twelve-bore guns.
Twelve yards for fourteen and sixteen bore guns.
Eleven yards for twenty-bore guns.
Rules for
Live Bird Shooting - same load limitations
The rise shall be:
Thirty yards for ten-bore guns.
Twenty-eight yards for twelve-bore guns.
Twenty-six yards for fourteen and sixteen bore guns.
Twenty-five yards for twenty-bore guns.
The 1892 American Shooting Association Rules allowed 1 1/4 oz. for both 10g and 12g and did away with the yardage differences.
