Imr 4350. Imr4831sc

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I didnt know IMR even made a short cut version of 4831. Are you referring to Hodgdon or IMR?
 
H4831SC is Hodgdon.

For H4831SC, this Extreme extruded powder is the exact ballistic copy of H4831. Physically, it has a shorter grain size which earned it the "SC" designation for "short cut."
 
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