The VihtaVuori pistol powders are single base, porous powders that also meter well through most powder measures. This powder has a comparatively fast burn rate, slightly faster than 231 or very similar to Red Dot. Useful in many popular cartridges, load data is available for 9mm Luger, .38 Special, .357 Magnum, 44 Magnum, .45 ACP and .45 Colt.
Big Book Catalog, Issue:68, Page:544
Sinclair, Issue:5B, Page:094