Lee Loader

I ordered me a Load All from Midway with my birthday discount. I had to get it in 12ga. No 20ga ones anywhere. Local reloading store had the conversion kit. Midway said Feb before kits come in stock.
Going to be loading black powder rounds for cowboy shooting.

Is there a conversion chart for the powder bushings to throw black powder?
In case I decide to use it with black powder.

Never mine I see the bushings are not big enough for a BP charge.