I shot a penny out of my Brown Bess before...
I was showing my musket to someone and he was checking the bore diameter with a coin, (why, I don.t know... I turned my back on him for just a second...)
I could see the penny about two inches down the bore sideways, just beyond grasp...
So I dumped about 10 grains of FFg down the bore and turned the penny flat with the ramrod and ran it down the tube and seated it on top of the powder...
I then added a heavy lubed 1/2 inch feltan wad over top of the penny and commenced to shoot it out...
It came out fine, there was no visible damage to my barrel after cleaning and a bore light inspection, no copper streaks or gouges to speak of...
For all I know, it may have worked like the gas-check disc does on modern alloy bullets...
Poor ol' Abe was a tad scortched though... ::
Oh no, I'm thinking again...
What if I could shoot a roll of pennies?
That would be like a paper patched wad cutter..
Nah, Don't do it, .50 cents a shot is too much...