Another set of varibles I believe is the amount and the velocity of the shot.

I have an old 16 Ga. hammergun that I shoot low pressure cartridges through. Generally 7/8 oz of 7 1/2s for Doves and Quail at around 1150 FPS.

The constriction in the Right barrel is aprox. .005, the Left .020. It seems that I "Feather" fewer birds with the Left barrel - the exact opposite of what conventional wisdom tells me to expect.

In other guns with higher velocity and heavier shot loads it is the other way around.

Last edited by postoak; 07/14/11 10:53 PM.
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