Calculate the F.O.C. for your arrow and that will tell you which way to go but you need to have BH' s of several weights to check and measure your balance points.

To find your F.O.C. %

1. Measure the arrow shaft from the tip of the broadhead to the end of the nock. Divide this measurement by 2 to find the center point (i.e. 30” shaft divided by 2 = 15).
2. Mark the center point with a felt tip marker. Now balance the arrow.
3. Mark the balance point with a felt tip marker. Divide the distance between the two marks by the overall length of the arrow then multiply the result by 100. (i.e. distance between the two marks of 30’ shaft is 2.5” then 2.5 divided by30 times 100=8.33%)

When >10% use a lighter broadhead
When < 7% use a heavier broadhead.