RE: Over/Under for Pheasant
If your using a PointingDog then a 20 -28 gauge is all you need I/M choke will work well.
If your foot hunting with a Flusher then a 12 gauge with 6's is all you need with I/M
I have a 5 3/4 lb Ruger o/u 28 gauge which no one is going to pry me from and a Beretta 12 gauge autoloader one is for the pointer and the other is for the flusher.