vihtavuori n550 OverviewMidwest now provides VihtaVuori N550 Smokeless Powder in stock now for sale in 1 Lb and eight Lb.N550 is utilized by the top shooters and manufacturers while in the shooting sector, Vihtavuori N550 Smokeless Powder has received an excellent reputation for being among the finest smokeless powders readily available.Vihtavuori