VihtaVuori is a Finnish Powder Company that has been manufacturing powder since the 1920's. VihtaVuori powders are extremely popular with benchrest shooters, High Power shooters, and varmint hunters.
This is a moderate burning propellant. It will fit most applications similar to Reloader 12 and IMR-4895 or IMR-4064. Applications range from the 17 Rem. to the 458 Winchester.
Big Book Catalog, Issue:68, Page:544
Sinclair, Issue:5B, Page:094