What arrows and what bow? What arrow length and what weight of broadhead. I have found sometimes depending on the setup you can cheat a bit against what the charts say...or you just try it and see if you can get things to tune ok. Some arrow manufacturers err on the side of stiffer despite what the label on the arrow states. I found once I had some arrows that were supposed to be 350 actually spined out closer to 320-315-ish.
LC
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