O.R. apparently used an AAH to win the 1896 GAH at Live Birds
http://www.la84foundation.org/Sports.../SL2702020.pdf
O. R. Dickey, of Boston. Mass., winner used a very handsome Parker Bros, hammerless gun,
of the pigeon model, and his load consisted of 50 grains, or about 3 1/2 drams by measure, of American "E. C." powder, 1 trap wad, one 3/8 inch pink felt, one 1/4-inch pink edge, and 1 1/8 ounce of No. 7 chilled shot in the United States Cartridge Co.'s "Rapid" shells, 2 3/4 inches in length.