American company Accurate Powders complete line of smokeless powders for handguns rifles and shotguns is engineered and lab-tested to maximize the precision and performance of your firearms. They bring the best ballistic technicians and the highest quality components together to assure that every gun is better served with Accurate Powders. Blackhorn 209 is a low residue high performance propellant for muzzleloaders and black powder cartridges that consistently shoots at higher velocities and with greater accuracy.