For upland game it's been O/U's for me since the early '70's. 6 years ago I went exclusively to a lighter 20 ga. and love it paired with Kent Fast Lead ammo. I hunt with a flushing bird dog. Situations where I could get off a third shot usually arise when I screw up one or both of the first 2 shots and when the bird's at a marginal range anyway. In that case, the bird wins and we continue the fun of the hunt. We have a two pheasant/day limit in Pa. so 2 shots should be enough 😉 .
For waterfowl it's either a 12 ga. O/U for ducks or an auto loader for decoying geese. (Note: glad I caught the fact that spell-checker kept changing "decoying" to "decaying")
