This was a popular and very common musket (Tulle fusil-de chasse) for the fur traders beginning in 1720.  This gun was perfect for hunting both small and large game.  With a smooth bore, this gun could accomodate shot as well as the ball.  The required powder had to be very fine and very hot burning.  Our Tulle uses FFF for its load and its prime.  Modern guns/reproductions might have a difficult time with the heat generated.  Later guns scored the interior of the bore to make a longer/more accurate shot and made the gun little use for hunting small game.