Partriot Javelin Slugs have been in development for 18 months by Matt Dubber of Air Arms Hunting SA and Roelf Vorster of Air Hunters. These hit harder than a standard pellet, fly further and at longer ranges are more ballistic efficient than a Diabolo could ever be. Four weights, 23g, 26g, 30g and 34g in either .218 0r .217 are available. Sold in 200 per tube. These are going to be a big hit in the world of slugs.