Okay gave it a shot today.
12# pure on
3 newer pennies cut in half
Melted it all up then added 4 tbsp zep (1tbsp at a time)
Scraped and skimmed the crud
Fluxed well
Added 12# coww
Stired and fluxes with saw dust and wax
Poured into ingots
Emptied my Lee pot and filled with this new mix
Added 3" solder
Cast some air cooled and water dropped from a noe brass 5 cavity 225-70 mold for my Ar.
Ran the pot at 750°
First time with this mold and things went well.