At the Riverton Handicap March 8, 1895 only one of the 15 competitors used an American made gun; all the others British.
http://www.la84foundation.org/SportsLibrary/SportingLife/1895/VOL_24_NO_25/SL2425015.pdfIt may be interesting to some to note the guns and loads used, and we give it below. It was a lamentable fact that of the 15 guns used only one American make was represented. This was a special pigeon gun of the Parker Brothers' manufacture, and was a beautiful weapon in every way, and was owned by Mr. Post, whose score of 93 on a hard lot of birds did not show that the shooting power was lacking."
"All the guns were 12 gauge, and it was noticeable that not a full pistol-grip stock was among the number, and most of them were the straight-grip pigeon gun model, nine being of this description, and six of the half-grip style. All were of the hammerless pattern excepting two; Mr. Welch and Mr. Robbing using hammerguns.
Following is the make of guns and loads used:
Capt. A.W. Money - Greener, 7 1/2 pounds.
George Work - Purdey, 7 1/2 pounds.
Post - Parker pigeon gun (AAH introduced in 1894)), 7 11-16 pounds.
Jim Jones - Scott, 7 3-16 pounds.
John B. Ellison - Scott, 7 1/4 pounds.
Fred Moore - Purdey, 7 7-16 pounds.
Leonard - Westley Richards, 7 1/2 pounds.
Mott - Crown grade Greener, 7 2-16 pounds.
J.S. Robbins - Greener hammer gun, 7 1/2 pounds.
R. Welch - Purdey hammer gun, 7 1/2 pounds
Downing - Scott, 7 6-16 pounds.
J.K. Palmer Francotte, 7 1/2 pounds.
Edwards - Scott Premier, 7 pounds.
J. Wolstencroft - Greener, 6 15-16 pounds.
Eckert - Scott Premier, 7 1/4 pounds.
More information here, with a list of guns used at GAHs; almost no French, but some Francottes promoted by VL&D
https://docs.google.com/document/d/1D8QkBDo-KIQYk2G8lkE-kHLUybB5NJzBahX_eFKEyuY/preview 
