I just chronoghraphed by new Mathews LX today @ 250fps. Its a 60 lb draw at 28 inches. I use a 100 grain point, and Beman 400's. I am trying to figure the KE. According to the Beman site, the nock is 13 grams, the insert is 21 grains and the arrow is 8.4 grains per inch. My arrow from tip of nock to the end of the carbon is 28 3/4 inches. So my guess is my total arrow weight is 375.5 grains.
So at 375.5.grains @ 250 fps me KE is 52.10. Would this be correct and is this the right speed and KE for this type of bow>
