The result of combining the technologies of spherical powders & extruded propellants. Smooth-metering, super short granule extruded shaped propellant with high energy. Has a burn rate between H4350 & H4831. Superb performance in 270 Win, 243 Win Super Short Mag, 7mm Rem Mag, 300 Winchester Mag.
Big Book Catalog, Issue:67, Page:526
Sinclair, Issue:4B, Page:095