I realize from the previous comments that I am going up against some generally accepted scientific information, but I believe most of what has been said is in error. The physics principles stated are generally relevant to bullets, less so to shot.
A spherical projectile does not have to slow to any predetermined speed to be dispersed by wind resistance. Because it is round it has a middle center of gravity. It is therefore impacted by the Magnus effect which is a destabilizing force on any projectile with a center of pressure ahead of the center of gravity.
Certainly, all physics pressure vectors are linked, but from a shotgun viewpoint, the only real external factor of importance is speed. Increase the speed at any choke, and you increase dispersion. Before the tech experts start tearing me apart on this, let's step away from physics and think about real world examples.
A pitcher throwing 98MPH has his ball tail up and away. It does not slow to 86MPH to tail. He can do the same thing with a whiffle ball without seams.
A muzzleloader that uses too much powder on a round ball, gets fliers and has to back off.
Turn on the garden hose at any determined degree of choke. Increase the water pressure. The water spreads out immediately from the nozzle outward. It does not travel out several feet to lose speed and be dispersed by air pressure.
If you want a single variable to increase shot dispersion from the barrel to the target, simply increase flight speed. Those little round pellets will overcome inertia and spread out.
Steve
Last edited by volleyfire; 03/19/17 02:05 PM.
