Stop in for a cup of coffee

I like 20ga. :D I studied the ballistics very closely and compared them to the 12ga. 20ga doesn't give up much in the way of performance.
The biggest difference is in shot weight difference. Twenty =7/8 of ounce in shot and 12 is an ounce and a 1/8 of shot. But in the end nobody asks how? Just how many!