I have put together a range camera; it is a high definition camera and lens (12volt) from Super circuits that sends a signal via 2.4GHZ video transmitter to a receiver (6volts) then through a Video cap converter to a lap top or directly to my 12 volt FPV monitor. Radio and monitor purchased from Range video. It will be set up to 30 feet from the target with AR 500 steel snow plow “V: shielding it off to the side. It has a range of 1500 meters and will see a .22 bullet on the target. I am using it for my .50 BMG practice saving me having to drive back and forth with a 4 wheeler. Not cheap but less than a scope capable for seeing the same and the mirage is not a factor. I have it all set up and the camera can tell the difference between a Phillips head screw or a straight screw from 20 feet away. I will when I get around to it put up the actual parts required. With numbers.
http://www.rangevideo.com/
http://www.supercircuits.com/?gclid=CL2 ... MgodHFgA9w