I've hunted them in NE MT and in Idaho and Wisconsin. I can't hunt them on the flathead res, otherwise I would hunt them here too.
If you can find concentrations they are great! Doves need 3 things, (food, water, roost) find the limiting resource in your area and you might find doves. I've done well shooting over all three resources in different situations and I've shot limits in all 3 states. They are a heck of a good time
But most areas in western MT just dont have high enough concentrations to mess with, unfortunately, so I choose to chase mtn grouse on sept. 1st.