Blackhorn certainly is not over rated. Its THE best powder you can feed a muzzleloader. No crud ring, easy clean up, accurate as heck. But what you do need are HOT primers in order to get it to set off. Knight's BP has had its share of issues with hangfiring with the powder. All you got on your patch was the soot blackhorn leaves behind. Cleans up easily with Hoppes and Montana X-treme solvent.