Perhaps this is a little tangential, but what does a 0.030" choke constriction do in a 0.730" barrel that a O.000" choke would do in a 0.700" barrel?

There is something more than simply constricting the diameter while increasing the length of the shot column that is going on because these two hypothetical barrels would pattern quite differently, no?

Is there a simple, consensus explanation?

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BrentD, (Professor - just for Stan)
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