If your 100 gr volume only weighs 86 gr , then that is pretty dense homemade powder.
Especially if it was screened powder not corned powder.
Yesterday I made some TP charcoal.
I agree that the volume of the charcoal is very light.
I did 4 rolls of toilet paper.
It produced 4.2 oz of air fly charcoal.
But the volume of it is way greater than charcoal that I made from other woods.