Vihtavuori N350 is the slowest in the N300 series of handgun powders. It is ideal for very heavy loadings and top velocities and energies for a broad range of pistol and revolver cartridges. The grain size (10 mm length and 08 mm diameter) is exactly the same than N320 N330 and N340; it is the porosity of the powder that makes all the difference in burning characteristics. N350 is very well suited to loading powerful rounds for example in calibers 9 mm Luger 10 mm AUTO and .45 ACP. With the slow burning speed it is ideal for very heavy and top end velocities and energies for a broad range of pistol and revolver cartridges. N350 is widely used in pistol shooting and especially in practical shooting.