In researching my limited library of pre-1865 writings, I do not see reference to using a cushion wad between the over powder wad and the shot. Later publications reference the use of a cushion wad in a cartridge to fill unused space for proper shell length and crimp. Most modern writing about muzzleloading shotgun loading calls for the use of the cushion wad. Is this borrowed from cartridge loading?
My experience is that cushion wads cause more problems in a muzzleloader than they solve.
My experience is that cushion wads cause more problems in a muzzleloader than they solve.