You could hit 10 of 10. If you expanded the target to the standard, British target of 2' x 6', it should be 10 of 10. The British practiced for shooting men standing in formation, and had "marksmen" who were armed with muskets in addition to riflemen armed with ordinance rifles.
The Bess is not an inaccurate weapon per a single shot. Where folks err is they often don't understand that to fire an entire box of ammuntion, 18-24 rounds depending on the year of the AWI (ammo loads increased), you need a much smaller ball to ensure that when you finish out your box, you can still load the ball into the bloody, dirty barrel. :shocked2: Musket ball recovered from battle sites confirm this.
The Germans apparently experimented using various size ball..., starting with a more accurate larger ball, then moving to smaller ball as the barrel got dirty, and to even smaller as the battle progressed. The problem was that a private under stress simply cannot be trained to carefully select the proper sized ball in a cartridge AND..., depending on the humidity, higher humidity causes thicker fouling faster. So the idea didn't work in actual application...or so I am told.
LD