RE: Preferred Gun, Shot, and Gauge for Pheasant???
Beretta 686 frame in 12 ga., a 20 will do, (It's on my wish list).
Federal Premuim copper coated 6s and watch them drop. Chokes depend on the conditions, usually I/M.
Find what ever fits your hands, have it cut to fit and pattern it. Your gun may shoot one shell/maker better.
FW area, do you shoot at Alpine?