THIS is a Pigeon Gun

I do not know the dimensions
http://www.trapshooters.com/threads/...nogram.217816/
Anna Rieker's Monogram Pigeon gun delivered in March, 1904, with which she won the DuPont Cup in 1905.
"Sporting Life" June 11, 1910.
Fred Coleman and Miss Rieker Shoot a Sensational Live Bird Match. Pottsville, Pa., May 30
What is believed to be two world's records at live-bird shooting were made here today, when Fred Coleman, of Pottsville, the State champion at live birds, killed 100 straight from a 33 yards' rise, defeating Miss Anna M. Rieker, of Lancaster, who shot from a 26 yards' rise and finished with a score of 93 out of 100. Three of her birds dropped dead out of bounds. Both shot in wonderful form. Coleman killed every bird clean, a feat never performed before at 33 yards' rise. Miss Rieker is believed to be he first woman to shoot a match at 100 live birds. She killed her last 33 birds straight and established a world's record for a woman.