Start at 54 grains of IMR 4831, and a 150 grain Ballistic Tip or Partition, in Nosler brass, set off by a CCI BR2 primer.
You should max out around 58-59 grains, but start off as indicated.
I’m yielding just over 3000 FPS with this combination, from a 25” gain twist barrel.
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There are no absolutes
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