RE: What you believe is commonly overlooked when tuning or troubleshooting.
Excelent points c903 , if your arrows arnt as close to identical as you can get , then they wont shoot close to each other . Spot hog has a news letter on their web site about this . They shot a dozzen arrows they thought were pretty well matched only to find that the shooting machine shot them in a socerball sized group . I belive spine was the culpret .