Actually, I already have machine guns. They are called Ribults, and have ten barrels on each stand. One gunner lights them, and fires off ten rounds. So with 20 of them in a line, it's a bit of a mess.
But! Having a flintlock doesn't magically make you immune to getting decimated by advanced artillery.
But! Having a flintlock doesn't magically make you immune to getting decimated by advanced artillery.