My homemade black powder

[LAGS]

I may not be doing things right,
But I did a calculation of the density of my compressed pucks.
They came out around 92% compression.
But , when I broke up the pucks , ground them and screened them to each grain size. My grinders of powder came out to 85 to 88 % comparison to granular Goex.
I am not trying to get all my powder to perfectly match up to commercial powder.
I just need to know what the comparison is like so I have an idea on how much volume matches the weight of the factory powders that I have and still use.

[Sandro_ventania]

Did you buff your powder? I believe that if you polish as much as Goes does, the measurements should match

[LAGS]

I did polish some of it.
It didn’t increase the weight per volume.
But it makes it measure better and more consistant than the unpolished that has those tiny sharp corners.
Polishing that I have found.
Helps keep the powder from forming DUST as you shake or move the powder around in your container over time.