Here is a useful tool for hunting for BLM, forest, range land or other spots that might be suitable for shooting (depending on your state's requirements): GeoCommunicator.gov.
Can be used to search for land with mining claims, rangeland, special forest areas (parks, etc), monuments, etc. It allows for printing to PDF, with legends.
Got any other useful web sites for such mapping of possible areas to shoot? Add the links/references here.