Well, Diode, I can tell you one thing NOT to do! I had a large keg of H-4831 that I bought years ago. It is best for loading heavy loads in large rifle cases with heavy bullets, so I don't use a lot of it in any short time. I ended up with the keg about half full, and taking up a lot of space in the cabinet where I store my meager supply of powder.
I decided to save some space, so I took a couple of 1 gallon plastic milk jugs and washed and dried them thoroughly. I put the powder in them, with complete and descriptive labels. I figured that the cabinet is dark, so the plastic and the powder would not deteriorate from light.
In about a year, either the milk jugs deteriorated on their own, or the action of the powder caused them to deteriorate. Any way, the jugs were brittle and splitting. I put the powder back in the original keg and threw the jugs away. So, that was one idea that didn't work!
I have the same problem with Bullseye. That is, I buy the Bullseye in 8 pound containers for economy, but a smaller 1 pound container is handier for use on the bench, and will load about 2,000 pistol cartridges. I have a couple of 1 pound Bullseye containers emptied in the usual manner, so I just transfer about one pound at a time from the 8 pound container to the one pound container used on the bench each time the one-pounder gets empty.
That works very well. I encourage you to look for any empty powder containers, and use those for your powder that you are separating into small lots. You know those are safe. Just make sure you label them adequately, and that should work.
Jim M
