LaneNebraska
I know - i got some... I use them for that
black gold power (BH) can not afford to spill any of that.... Can not leave the powder in them forever as the UV's wll deteriorate the powder, but for shooting that day or week they are great.
But, I am still operating in the dark ages I really like throwing the powder by volume - it slows me down - allows the barrel to cool a bit.... That is one of the things that sets shooting ML's apart from centerfires - which I use to do - a LOT...