Accurate Powders is a company that definitely lives up to its name. The complete line of smokeless powders for handguns, rifles, and shotguns is engineered and lab-tested to maximize the precision and performance. Accurate uses the best ballistic technicians and the highest quality components together to assure that every gun is better served with Accurate Powders Accurate Nitro 100 is a fast burning, flattened spherical, double-base shotshell powder that is a clean burning, 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. Warnings from the Manufacturer: Do not exceed the loads displayed in the reloaders guide. Never mix any two powders regardless of type, brand, or source.Never substitute any smokeless powder for Black Powder or any Black Powder substitute.