Hey Wayne;
I think it takes about an ounce to and ounce and a half for a Medallion .049 to to the pattern on 45ish foot lines, so just shooting from the hip, I would start with at least 2.5 to 3 ounces and work from there , until you hear from a reliable source of information. contact Larry Renger directly. I'll bet he has a good idea of what it will take.
Type at you later,
Dan McEntee