Originally Posted by
blacktail4ever
Most expert archers agree that an FOC value that is between 7 and 10 percent will produce the best compromise between stability and a flat trajectory. The American Society for Testing and Materials, in their specification for measuring balance point, state that a value of 9% is typical. But, they also state that the range can be as wide as 7% to 18% while still producing good arrow flight characteristics.
Dr. Ashby explains how to get max penetration and best guiding charateristics, more is better in this case.
http://tradgang.com/cgi-bin/ultimate...ubb=forum;f=24