For anybody interested in reloading shots shells and choke performance there is an excellent five part series that has just been released on YouTube by Joel from Surviving Duck Season. It deals with extreme slow motion video captured from super fast frames using latest video camera technology. Certainly worth watching if your remotely interested in the performance and science of your reloads. Lots of rumours and common say disproved.
All good hope others enjoy also. There is certainly lot of myths discussed. Not since John Olin then Bob Bristers book shotgunning the art and the science has anybody really re visited to this level with new technology.