Today I made quite a lot of .36 and .44 cal wax cookies.
I use a modified Gatofeo recipe: 50% bee's wax, 50% Crisco. Nothing more. The original Gatofeo has so many component that only black pepper and oregano are missing.
I have used these cookies with great success since I started shooting Cap and Balls. I place them between the powder and the lead, and if you ask, yes, I left one cylinder loaded for a very long time and there was no problem with the wax fouling the black powder; and I don't put any messy Crisco on top of the ball.
I found out that if I use 1 oz of the wax/Crisco mix and let it melt and float on top of hot water in a pot that is around 6 1/4" in diameter, once the system cools down, it gives me a disk that is exactly 1/8" thick.
I cut the .36 cockies with a .38 Special shell, and the .44 cookies with a 6.5x55 cal shell with the neck cut off below the shoulder.
I store the cookies in a small Tupperware filled with cornmeal, so they don't stick to each other.