As part of Dr Jim's "Long Range Wild Fowl" article in the Spring 2013 Double Gun Journal Volume 24, Issue 1, p. 137, Bro. David patterned his LRWF, both barrels .042" constriction, with a handload using a 3 inch Winchester (plastic) hull with 38.35 grains of Blue Dot, Winchester 209 primer, Winchester AASL wad, and 1 3/8 ounces of #5 nickel plated shot. The average number of pellets was 246 and measured weight 1.353 ounce.
Using a rangefinder confirmed distance of 82 yards, 3 shots were taken holding at the top of the 30 inch circle:
Target 1. Right barrel - 13 pellets in 30" circle; 5 in duck, 2 in wing. Percentage .052.
Target 2. Right barrel - 20 pellets; 6 in duck. Percentage .081.
Target 3. Left barrel - 21 pellets; 6 in duck and possible breaking both wings. Percentage .085.

If we only had a 'Woolwich'! wink