That's a Vectan "disk" powder.
206v and D20 are "disk" powders (different coloration, round flakes).

The Vectan A24, A1 and AS are described as a "flake" powder (square flakes).
Around here PrimaV has a following. It's a "granulated" powder. Very fine similar to Titewad.

Even though I'm not seeing it in front of me, it looks like a powder that wouldn't meter all that well, especially if it was in small quantities like for a 28ga. 800X is like that. It's not recommended for use in a progressive press for 28ga. Mec says to use it in a single stage press. But then I know from different reloading forums that a lot of guys like it, so maybe it isn't all that bad for metering. I have enough Promo, RD, GD, 700X, and E3 that I don't need to try a new powder.

Ask RST. End of story.