What does it calculate the optimum draw weight for a Mathews Helium with a 28.5" draw length, shooting Easton Flatline surgical 340 spine shafts, factory nocks and inserts with NAP quickspin vanes and 125 grain tips. The shafts at 27 3/4" from the end of shaft to the throat of the nock.
68ish is where the spine hits bottom of the optimum range. Assuming you have the 2.25" QuickSpins you should be going somewhere around 295ish and weigh 386 grains. 66lbs should be spined right in the middle.
Thanks again. I have shot these the past couple years but don't have OnTarget anymore and never knew what my arrows came out to be. I was hoping when I built them that they would be 400 plus grains but they are fairly close though.
