Jason-- It is my experience that H4831SC and the older (and no longer produced I think) H4831 have exactly the same properties except for the length of the kernel. Therefore, the two powders are interchangeable by weight as used by me in my rifles.

For example, I use xx.x grains of H4831SC in a .300 Win. Mag. loading under a 180 grain Nosler Partition. This is precisely the same weight of H4831 I used years ago before Hodgdon started marketing the H4831SC.

Furthermore as I indicated above, I believe that Hodgdon's has ceased production of the older, long-kernel form of the powder that was named H4831.

Jayhawk Dan