Best place I have found is Pierre, South Dakota. That is the home of the Varmint Hunters Association. You can get a membership for cheap, they send out magazines, and list places you can shoot. I shoot out by the Oahe Dam along the river. If you go the local cafe and ask around you will find places to shoot for free.
Get Public Land Maps for the Rocky Mtn States. Idaho requires a Non-Rez hunting licenses for instance. Wyoming does not require a license. I would check regulations by state. Utah has the "White Tail" Prairie Dog on the endangered list. Colorado has some good public land shooting.
Remember Prairie Dogs carry the Bubonic Plaque do not pick up dead animals or camp near the towns. Take precautions to avoid the "fleas" which transmit this disease.
The areas designated as "Deserts" are very good habitat and are usually public lands. The Prairie Dog towns are also Rattle Snake domains. Eagles and Horned Owls feed in these areas. Make sure you do not bother these Raptors.
Last edited by CaptMidnight; 12-16-2014 at 03:13 AM.