MIMF

I just got several boxes filled with different color bronzing powder form the 30's and the 40's from an estate sale. I am currently spraying GF waterbased finishes. To just do a top what kind of ratios of powder to finish do you recommend? I would like good coverage hopefully in one coat but don't want to waste this vintage material. I plan on getting cheap HF guns to save my good guns for clears and bursts.

Thanks