Drop your powder charge then tap the butt of the rifle on your shoe to settle and level the powder charge in the bore. After that I add 10 grains (actually I have a very small, veryold,powder measure scoop which comes out just under 9 grains) and add that on top of the powder. Again, tap the butt of the rifle on your shoe a little to settle/level the cornmeal or oatmeal. After that set your conical or roundball. Also with a filler I use a little harder seating pressure.

When you ignite the powder the explosion pressuresforce against the cornmeal/filler compressing it against the base of the projectile. It acts as a buffer of sorts, not allowing as much of the ignition pressures to escape past the projectile. The results are, they claim better barrel pressures, a more uniform movement of the projectile, and some even claim that the filler will "clean the barrel" if you will a little on the way out.

I want to try;
powder, single wad card, filler, wad card, then conical.
powder, single wad card, filler, then conical.
powder, filler, conical

on my next outing. Today I might have to cast up some more bullets, and conicals. Friend brought their rifles and children over the other day and we shot off a large supply of my home casted conicals and roundball...