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An extruded propellant, H4831, is a well loved propellant that
works superbly in many large capacity cases. It is the powder that helped
make the 270's enviable reputation, and a favorite for use in most of the
belted magnum calibers. Data for this propellant it not useable with IMR
4831.
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Source: Lyman Reloading Manual 47th Edition
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H4831 - It is probably safe to say more big game has been taken with H4831 than any other powder. Bruce Hodgdon was the first supplier to introduce this popular burning rate in 1950. Since that time it has become a favorite for cartridges like the 270 Winchester, 25-06 Remington, 280 Remington and 300 Winchester Magnum. As an Extreme Extruded propellant it shares the fine quality of insensitivity to hot/cold temperatures, as well as superb uniformity from lot to lot.
H4831SC - Ballistically, this Extreme Extrude powder is the exact copy of H4831. Physically, it 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. Available in 1 lb. & 8 lb. containers.
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MSDS
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Source: Hodgdon Powders
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