How do I know what grain broadhead to use?
The industry standard for determing point weight, whether broadhead or fieldpoint, is a term called FOC (Forward of Center). The normal accepted ranges of FOC are between 7% and 10% FOC on any given arrow. The method to determine this is as follows. Take your total arrow length, including nock and point. Let’s say in this example the arrow length is 30″. You then divide the number by 2, which would equal 15″, and mark that spot on your arrow. Next lay the arrow on your finger and continue to move the arrow until it balances on your finger. Mark this spot on the arrow. In this example the balance point is at 12″. Next, take the measurement between your two marks; in this case it would be 3″. Then divide this number by 3 into the overall arrow length (30 inches) equals 10 percent FOC. So it would be within specifications. This is the accepted way to determine point weight average. However, in today’s market of speed and carbon arrows the average broadhead weight has generally decreased.
