When hunting with the 308 I just use 150 gr bullets. If I want a different bullet I use a different cartridge not that the 308 is not good with other weights.
To date I find that IMR 3031 best in the 308 with RL 10 looking good so far.
In the 30-06 with 150 thru 180 gr bullets I like IMR 4350 the best.
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