I used to shoot a 62 cal(20ga) Trade Gun, a smooth bore(cyl bore) flintlock muzzleloader, wanted to hunt turkey with it, so I tried conventional wads, they were hard to load, so I made my own wad consisting of paper, an over powder wad, #6 shot and an over shot wad all glued together and loaded as a unit over the powder, it patterned good enough to 30yds, seems to me I read an article on it in Muzzleblasts or Blackpowder Hunting, but it's been a looong time.

It took a lot of experimenting with paper type and thickness to find a wad that would break up at the right time and not remain a solid projectile to the turkey target, which would have killed the turkey target most of the time, but would be illegal, but eventually I found the right combination of paper and number of wraps to consistently work, but never connected with a tom to find out before I sold the gun.
Tim