Aluminum arrows are definitely heavier than all carbon arrows of the same spine. However, Easton FMJ arrows are a carbon core with an aluminum outer shell and weigh approximately the same as a comparable all aluminum arrow. The difference is that they have a much smaller outside diameter which will help increase penetration.

Also carbon recovers from bending at a much much faster rate than does aluminum. The carbon/carbon core arrow recovers quicker after it leaves the bow which translates to less speed robbing flexing as the arrows flys through the air. Same thing when the arrows impacts the target/animal. The carbon core arrow will flex less as it impacts so you get less side to side friction as the arrow is penetrating the hole in the animal.


All this being said, the 2117 is just fine for your set up.





FOC just stands for "front of center". It basically refers to where your arrows balance point is in relation to the actual measured center of the arrow. The more weight you have up front the higher the FOC balance is. An arrow that has a higher FOC percentage will penetrate better than a low FOC arrow because the weight up front pulls the rest of the arrow through the animal instead of relying on the entire weight of the shaft to push the arrow through.

Think of it like this. A high FOC arrow is a lot like a front wheel drive car and a low foc arrow is a lot like a rear wheel drive car. Punch the gas on a front wheel drive car and the car pretty much goes straight because it is being pulled instead of being pushed. Punch the gas on a rear wheel drive car and you have a real possibility of the car spinning out.