You are right about the thicker skirts with retracting the plug. I didn't think about that.
: That's good accuracy! I take it the Greener is smooth, with the addition of the rifled choke? If so, where'd you get the choke? I think I need one. I know I need one!
: 6" to 8" with non-dedicated ammo for the double is quite good too. 6" to 8" was about norm for 3 lefts and rights from Greener's 8 bore double smooth 'jungle-gun'.