The way we make grease cookies. Put a round cake pan, half filled with water, on the burner at a real low temperature. cut your lube into pea sized bits and float them on the water. (There is a formula you can use to calculate the volume of lube that will give the desired end result thickness) When the water becomes hot, the lube will melt and float on the water. DON"T LET IT BOIL! when the lube has melted and floats uniformly across the surface, just turn the burner off and let it cool over night. run a thin sharp knife around the edge and remove your big grease cookie. When loading just add the powder and card wad if any and push the case mouth through the big cookie.
The formula to figure out how much lube depends on the thickness you desire and the diameter of the pan. Most round cake pans are 8 inch. so lets say you want a 1/8 inch grease cookie thickness. 3.14 (pi) x (4) radius x (4) equals 50.24 square inches. divide 50.24 by 8 equals 6.28 cubic inches of lube.