Thanks again everyone.
I think I will talk with all of the neighbors just to let them know what I want to do.  I don't know about the guys to the east though.  They are AVID shooters, ie. occasional evenings and most weekends it sounds like when I lived near Fort Riley in Kansas.  Hope they have a nice setup
 
Anyone have concerns about return rounds off of the face of my silos in the event of a really poor shot?