A slower burning powder very well suited to a wide range of medium to large cartridges, especially with heavier bullet weights. An ideal fit for many of the 30 caliber magnums with lighter bullets, but useful across a wide range of bore sizes. Particularly well matched to heavy bullet loadings in the 6.5x55mm Swede and 30-06 Springfield cartridges.
Big Book Catalog, Issue:68, Page:544
Sinclair, Issue:5B, Page:094