I've found an ounce of 6's out of my 16 or 20 gauges crushes early season pheasants and puts all the shot in my birds that I care to pick out. 7.5 shot makes them look like a spaghetti strainer and too many end up practically inedible because of it. Late season I switch to 1 1/4 oz. of 5's in one of my 12 gauge guns.