RE: 13.3 foc could it cause problems
One negitive to very high foc , is you arrow flight starts to look like a rainbow , arrow drop is significantly increased at ranges farther than 20 yards , The opposite is true for low focs , but the drawback is unstable arrow flight with fixed heads . A happy medium is what most archers chose , 10 -12 foc , but my sugestion is try it and see what flys best for you , make sure you are spined correctly , that is way more important that foc .;