This extreme extruded powder has a shorter grain size, therefore the designation SC or short cut.  The shorter, more compact kernels allow the powder to flow through the powder, measures more smoothly, helping to alleviate the constant cutting of granules.  With the smoother flow characteristics comes more uniform charge weights, while the individual grains orient more compactly, creating better loading density. 

Favorite for cartridges like the 270 Winchester, 25-06 Remington, 280 Remington and 300 Winchester Magnum.