vihtavuori n550 OverviewMidwest now presents VihtaVuori N550 Smokeless Powder in inventory now available in one Lb and eight Lb.N550 is used by the most beneficial shooters and brands in the capturing business, Vihtavuori N550 Smokeless Powder has attained an excellent standing for currently being one of the best smokeless powders obtainable.Vihtav