Tip: was at Cabela's yesterday and saw those Large cartridge storage boxes, ( J-20 series $4.99) that gave me an idea.
First it turns out to works great as a storage box to carry your pre-measured powder vials to the range.
https://i.imgur.com/MlLLuxxm.jpg
https://i.imgur.com/oDIz75pm.jpg
It also works great too hold the vials when you're filling them...
https://i.imgur.com/XdA6JNtm.jpg
