miller,
What you mentioned about the choke acting as a sort of "check" seems to the logical mind to be so. However, we have been told that small shot acts like a liquid, and that as it enters the choke it actually speeds up, being subject to the venturi effect. We see other applications of the venturi effect around us, carburetors, cooling towers at nuclear reactors, etc.
I, however, am not convinced that a load of shot acts the same as a moisture laden gas, and will continue to believe that great stresses occur when the shot enters the choke constriction area. The greater the constriction the greater the stresses, I believe.
What I would find interesting is how the bulged barrels in question were choked.
Stan
Stan
