At least when it comes to upland hunting, more people are undoubtedly overchoked rather than underchoked. Too often we think of more open choke as being a crutch for poor shooting. While it does give the shooter a greater margin for error, what it also does is keep from shooting up game at close range. As the late Mr. Brister expressed it: "Full choke is a demanding mistress, improved cylinder a forgiving friend." And far more upland game is shot at IC range vs full choke range.
Stan, another way of looking at your point about cylinder: Hunters who need tight chokes often lack the field skills, or their dogs are so poorly trained, that they can't get close shots and have to compensate with tighter chokes. That's the other side of the same coin. Fire back!
