I learned a valuable lesson yesterday. I use Accurate MagPro for 300-WM, and Winchester StaBall for 6.5-CM. I did some loading work on both a few days ago, and forgot to remove the powder from my Chargemaster 1500. I noticed the powder ... maybe a half-cup ... and thought "Crap, which one did I load last?". Couldn't remember. Figured, no big deal, I'm sure I'll be able to tell by looking at the powder. No such luck, as their appearance is remarkably similar. Ended up having to use a high-power magnifying glass to determine a very subtle difference that was sufficient to prove the leftover powder was the StaBall. Won't make that mistake again. From now on, the jug in use comes off the storage shelf, and stays off the shelf until the excess is returned to the jug. Lesson-Learned.