i noticed under NOTE .it said that uncle mikes brass weighted a black powder 3f volume charge of 100 grs and it weighted 99.3 on the powder scale.i used my 35 year old THOMPSON/CENTER BRASS volume measure that goes from 50/120 grs. it was only .5 to 6 of a TENTH of a grain off from the volume measure.example, my 100 gr measured in the brass thompson was 100.5 in the powder scale. if i TAPPED the measure it was 101 gr with 2f.i was surprised it was not like 2 ,3.4 GRAINS diffferent than the powder measure. there is no reason to weight a charge ofGEOX 2F BLACKPOWDER USING THE THOMPSON BRASS VOLUME MEASURE.good articile, i learned.