This is Dan, he has been putting in some serious sling practice for several years now. The stones he is using are in the same weight range as the vast caches of stones found in British iron age hill forts. Every one of these shots would drop a man in his tracks.
[video=youtube;IJ65qYFKcwQ]http://www.youtube.com/watch?v=IJ65qYFKcwQ[/video]
[video=youtube;IJ65qYFKcwQ]http://www.youtube.com/watch?v=IJ65qYFKcwQ[/video]