Crusty, check with Hodgdon Powder folks. They'll clue you in to the "whiskers" on smokless powder particles.
I've seen what looks like whiskers with a microscope and to date, there's no way to transfer that image from my eye's retina to any out-of-body electronic or physical media.
US Navy Distinguished Marksman Badge 153
Former US Navy & Palma Rifle Team Member
NRA High Power Master & Long Range High Master
NRA Smallbore Prone Master