I don't see empty boxes of Black Hills ammo anywhere...ever. Are they headstamping their brass with a BH or BHA?
They use Starline brass.
Under normal (i.e. pre-panic) circumstances, my local Cabela's stores stocked lots of Black Hills pistol ammo, and I used to use it as my carry ammo until a much more convenient LGS started selling Winchester Ranger for the same price ($30/50rds).
I think that their high visibility in the gun press occurs simply because they have very promotion-minded management.