All shots taken at 40 yards.
Browning BPS 20 gauge 28" Carlsons TSS .565 choke tube.
TSS #9
TSS #7
Winchester Double XX #5 3"
Winchester Double XX #5 3"
20 gauge Double XX #5 doesn't seem to make the 20 gauge a viable 40 yard gun. TSS #7 and #9 definitely do.