I decided to weigh the 100 grain by volume charge of Blackhorn 209 I've been shooting. It consistently weighed between 72-73.5 grains. 100 grains by volume of BH209 according to Western Powders should weigh 70 grains. I adjusted my TC powder measure to 95 grains and it weighed in around 69-70 grains.
I guess my volume measure is about 5 grains off.
I guess my volume measure is about 5 grains off.