I just got a can of this. Have been using 2 fifty grain pellets of pyrodex. It was shooting good groups out of Thompson Center Impact with 250 grain Hornadt sst. According to blackhorns web 100 grains by volume is 70 grains weighed on scale. In tube that is about equivalent of the size of 3 fifty grain pellets. If I put it in volume measure it is 75.5 grains weighed. Anyone have any experience with this powder? Little confused of how much powder to use and don't want to go through cleaning process of pyrodex or triple 7.