I have that same loading data from Lee & I believe that is for card wads.
I have the Lyman manual #1 (very old) at home & could look later today when I get home but I believe there is data in there using the red AA wad or the SP12 Remington for plastic hulls (AA) - AL 5 & the above wads. I used that stuff years ago for a 1 1/4 oz. loads for waterfowl. I still have some of the Al5 left over & it still shoots just fine. Colonel