Nitro 100 is a fast burning, flattened spherical, double-base, cost-effective choice for all 12 gauge target applications. NOTE: The reformulated Nitro 100 has been optimized to improve flow and ignition characteristics. Always use the most current load data. For shotshell please use load guide version 2.1 or later. For centerfire metallic cartridges please use the load guide version 3.5 or later.