I recently inherited a fair bit of reloading components that I am guessing are in somewhere around 30years old. I used used up a mostly full 3lb can of W231 and that ran as expected. So has the unopened can of Unique. It was all stored in a basement, so I know climate was controlled for the duration. The one that has me concerned is the half can of Blue Dot. There aren't any blue dots in it that I can see. I loaded a pound of new production Blue Dot a couple of years ago, and the dots were plain as day. This older Hercules-labelled can has no evidence of them. Which makes me wonder if it is a different powder transferred to this can. The flakes look like what I remember for BD, but then Unique kinda does too. The load weight for Blue Dot under a 147gr 9mm makes for a pretty explody round if it is, in fact something other than Blue Dot in the can. Any advice would be greatly appreciated.