I have to admit that powder can sit in the drop for a while. I tend to load in spurts, often walking away from the bench planning on getting back the following night which turns into the following week or more. There have been times where I got back and couldn't recall what powder was in the drop. Usually write the powder, weight, and col for quick reference.
I do keep powder in a cabinet separate from the bench though, so one jug out at a time. My issue is one of stopping part way through a run and not getting back for a while. Been writing notes to leave on the bench as well to keep track of where I was and what I was doing.
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That's a good policy. I need to get in the habit of doing that myself.
Eta regarding yard work. Picked up some poison ivy or poison something on my arms. A good couple of weeks ago cut out a bunch of crap from my neighbors side that was encroaching over the fence and had wrapped itself around everything. Arms got a bit scratched up dragging it all on the truck, but was otherwise fine. Couple weeks go by and suddenly my arms are bumpy, red and itchy. Never heard of a delayed reaction like that. Should of been loading ammo instead, lol.