I don't know if this qualifies, but the most accurate load I can find for my rifle is the 140gr Rem. factory load. Shooting the 140 gr. Nosler, at a chronographed 3406 fps, I am getting 5/8" groups at 100 yards.(5 round) I let the barrel cool for a timed 5 minutes between shots.
If anyone has something better, I would love to hear about it.

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Jay
"For God and Country"