I am interested to know the advantage of carbon arrows vs. aluminum if both must weigh the same( as in 5.5 gr. per lb. min arrow weight ). For example, I shoot 27.5" 2312 X7's that weigh approx 343 grs. set up with 50 gr. bullet points, and 3" feathers out of an old CSS System Three one cam set at 63 lbs. These arrows are as light as I can go without reducing the draw weight. The bare shafts weigh 9.5 gr per inch. They have a really poor F.O.C., but they shoot pretty well, as far out as 60 yds..go figure! The Easton chart shows some carbons that are spine'd the same (A/C/E for example) but weigh as little as 7.0 gr per inch. If I were to choose the A/C/E's, I'd have to add on weight (via heavier points and vanes to make the 5.5 gr per lb., so is there an advantage to carbon, or am I missing something??? Brett P.S. This is my first post...I just got back into archery after 10 yrs and I have a lot to catch up on! Your help is greatly appreciated!!!