Rich: DuBray took delivery of the first Parker AAH Pigeon Gun in 1894; SN 79964 with Whitworth tubes
That was likely the gun he used at the 1895 GAH with 1 1/4 oz and 48 gr. "E.C." = almost 3 1/2 Dr. Eq.
http://library.la84.org/SportsLibrar.../SL2503016.pdf
Any idea as to the date of manufacture of the Scott?