cayugad
Actually during the Revolutionary War is was quite common for the Brit's to double their muskets... In fact during the famous Boston Massacre, You the massacre that killed 5 people - it is believed that 2 people were killed by one double balled British Musket.
And you were also correct about the "Buck & Ball" loads - they were really used a lot during the war especially when doing the line of squirmishers thing...
just a couple of history notes....