Vihtavuori N350 is the slowest in the N300 series of handgun powders, ideal for heavy loadings and top-end velocities in various cartridges like 9 mm Luger, 10 mm AUTO, and .45 ACP.
Originally developed for .22 rimfire cartridges, Vihtavuori 3N37 offers a burn rate similar to N350 and is used in competitive shooting for USPSA and IPSC disciplines.
