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Gordon it really shouldn't make any difference, as far as advantages, if your groupings and velocity is good. H4350 is a good powder for the .270, and the 30-06., as is IMR4831. So many factors come into play with loads. Barrel harmonics, twist rate, weight of bullet, etc.
I am suprised that you use mag primers. Do you hunt in fairly cold temp's? I know they can be an advantage in sub-zero temps.
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