...and this is the Agricultural Engineer's method.
Back when I first started reloading, getting every last bit of DuPont's stick powder out of their rectangular cans was a real pain.
So, each pound of 4198 (by far the powder I used the most) would be transferred into this repurposed Winchester 785 container. With it conical spout, every stick would easily pour into the powder measure. Lot number association was maintained by keeping the "original" can of powder until the powder in the "transfer" can was used up.
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If I knew then what I know now, I would never have done this (and do not recommend anyone doing it now), but nearly 40 years ago, I was young, foolish and thought nothing bad could ever happen to me.
By the time I learned better, I had been doing this for so long and the process was so ingrained that I elected to continue it for IMR-4198 (but not any other powder) and my loading procedures and associated checklist take this into account when loading 223/5.56.
And by the way, I know IMR-4198 isn't made by Dupont any more and it is not a ball powder, but I didn't see any need to cover up that part of the label.