Introducing the Vectan A1 Smokeless Gun Powder, the A1 is a medium-burning powder with colored flakes. It offers a balance between speed and energy, making it suitable for a wide range of applications. This powder is a similar burn rate to VihtaVuori N330 or possibly Unique. This does not mean A1 is a direct substitute for these powders. Warning About Smokeless Powder:Do not exceed the loads displayed in the reloaders guideNever mix any two powders regardless of type, brand, or source Never substitute any smokeless powder for Black Powder or any Black Powder substitute