For 7.62 x 39 123 gr. .310 dia. bullet in FMJ,SP or V-MAX Your three best powder choices are AA-1680,IMR or H4198 and Reloader #7.
Max charge weights run from 24.6 to 26.8 Lyman #49 manual with a MV range of 2307 to 2412 fps. for these three powders and none are compressed. I generally find Max loads are not always the most accurate.
I don't have a 308 but I shoot a 300 Sav. and I like Reloader #15 in it and I also use load it in my 54r Russian.
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