If you have a staunch pointing dog, a la the late Burton L. Spiller's great grouse stories, then a O framed Parker in either 16 or 20 with 28" barrels and open chokes--If you have a flushing breed, perhaps the same with a tad more choke- I haven't hunted Sir Ruff in 30 some years, but my favorite gun when I was younger, lighter, fleeter of foot and had a good solid English Setter was a LeFever 20 Durston Special 28" barrels DT- fit me like a tailor made suit--like a dummy, I sold it to a friend who had always liked it better than his 20 Browning Belgian made Superposed with SST and AE-- long gone days now--

"The field is the touchstone of the man"..