1) BONE SUPPORT
2) MUSCULAR RELAXATION
3) NATURAL POINT-OF-AIM
The three fundamentals of a shooting position, straight from the USMC Scout Sniper manual. All serious riflemen have committed these to memory. The TAB sling in the video works nearly as well as a military loop sling, but unlike the loop, it is also a carry strap. The Ching Sling, developed by Gunsite instructor Eric Ching, is faster yet, but not quite as stable as the TAB.
http://www.youtube.com/watch?v=ebybmdXxsb0 
