The Vihtavuori N160 Smokeless Rifle Powder is a single-base powder for handloaders who build their own rifle cartridges. It belongs to a family of burn rates that covers cartridges from small calibers to large magnums, so you can match a powder to your bullet weight and case size. It's temperature stable, which helps keep performance consistent in changing conditions. Sealed in its original container, it has an estimated shelf life of at least 10 years.