One of my favorite stories is by R. Lee. He claimed he was asked to develop loads for a pistol: he got help. His help had a very good business card so they developed all of the loads using dippers and scrapping with a business card. As the story was told one would get the impression they were in a pub because they had so much fun.
They knew the loads had to be done in grains; after returning from the range they took the dipper and ‘the’ business card and starting weighing the loads in grains. For maximum loads they used the magic of the pyramid/cone of powder above the dipper; The cone/pyramid of powder will not support enough powder to caused an over charge, as the story goes they spent most of the night converting volume to grains; and they used a Lee scale.
F. Guffey