Originally Posted By: cpa
For example, have you thought about the relative impact on the lower level of shot as the upper level is slowed going through the forcing cone and the choke and how any resulting deformation might compare to the initial explosion deformation?


It isn't slowed at all. The shot charge acts as a fluid in motion and is speeded up due to the venturi effect when passing through a constricting area, such as a choke. And, that is not "common knowledge, belief or anecdotal evidence", it is scientific fact. Thus, there is no further significant deformation, due to setback, after the initial ignition and movement from static.

SRH

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