User blog comment:Waters Knight/Monty Tweets About 'Dust Levels'?/@comment-10380701-20140514051036/@comment-4010415-20140514215254

Apparently, FortunePayback, in the commentary (why have I still not watched it yet?), they say bullets can have dust in them. So, if Ruby buys bullets with dust in them, technically she is using dust, just in a really really basic way.