Iskipped the first 5 pages of your disertation and went to the good stuff.

IBO speed is the industry standard that a bow is shot at to determine speed for comaprison with other bows. It used to always be AMA when I started shooting.

"Almost too light to shoot at targets. How can it be heavy enough to shoot a living breathing animal"?

I decided to go look the rules up and fould it interesting reading.

1. The 5 gr per arrow was established to ensure that the bow has a speedgreater than 280 fps. It was not set-up because someone felt 5 gr was too light. It was set-up to make sure the arrows flew fast enough to meet their rules. There is nothing that says that the arrow is too light to shoot targets.

2.In the case where an archer’s equipment, when shot at five grains per pound,does not generate 280 fps, that archer may shoot arrows weighing less than5 grains per pound. Therefore, a shooter can go lighter if they are not over 280 fps.

for the record. I would not go lighter than this for any reason. I choose the arrows because the person I bought them off of uses them himself and mostly hunts. I did not buy them becasue I wanted blazing speed. however, on that note. The increased speed means that if I misjust my range by 5 yds I still hit the animal in the boiler. Where as a 5 yd misjudge by you could hit the animal in the bottom of the sternum and result in nothing more than a woundeg animal. the 1/2" will not help you there.