Capping D-bol

If My scaled weighed to .001 grams or 1 mg, and I was going to cap 50 @ 10mgs each of my product which equals 500 mgs, Could I just fill two caps with filler, weigh that and multiply it times 25. Then take that figure and subt 500 mgs of the filler and add my product to the remaining filler and then fill all 50 caps. Would the above work or not.

I have heard of folks using a coffee grinder to make sure that the filler and the substance are completely blended; this would be much better than mixing it by hand.

Or you could just make it as a liquid. Easier to make. Dunno the proper ration of PEG300 and Bacardi, but I believe it is soemthing like 45% PEG and 55% Bacardi.