It's been my experience that you'll find two accuracy nodes. One higher and one lower. I prefer to stick with the "lower" nodes. Leaves you more wiggle room if you run into a temp change and your brass will last longer if you're not pushing
for the higher pressure all the time.
Makes no difference which powder you're using, the nodes are there.
I would work with a 1/10th change in powder around the 45 grain load as you get real close in accuracy.
And make sure you only change "one thing" at a time or you'll end up chasing your tail. JMHO and that's what works best for me, Mike.
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