You have to define "western birds" more thoroughly if you wish considered advise.
They could be anything from Doves to Greater Canadas, Spruce Grouse to Hungarian Partridge, Sharptail Grouse to Pheasants.
And then there is the question of when and how. For example, pheasants shot in a SD cornfield drive are best shot with choke combinations that differ greatly from pheasants walked-up by man and dog in a MT coulee.
Similar scenarios can be made for all the other species and where and how they are hunted as the "middle of the country" is a little vague.
BTW, have you much experience in shooting in high winds and often freezing temperatures? Your experience with such should also be considered, if you are going to open the chokes on a singular gun for a one time hunt somewhere around here.
As an aside, Daryl usually comes with 6 or 7 guns when he comes up to Sidney to hunt pheasants.
