280Rem, R-P cases, H4831, 150gr Nosler Solid Base SP, CCI Mag primer. Current loading data lists 53.7 gr of H4831, I have an older lot of powder from the early 90's, I am using data from Nosler #4 handbook . William
Last edited by William T. Watts; April 23, 2012 at 09:12 AM.
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