I've been bow hunting for 2 years now with alluminum 2413's, and I am thinking about switching over to carbon's. How do you tell the size of the carbon's? I see easton has 400's, 340's, and so on. I guess my question is which arrow size would closest resemble the 2413 that I shoot now? Thanks Bub

Hey Bub-I always go by the charts provided by each company.The sizes they state-400,340,etc.Are designated for the poundage you shoot,cam style,etc. If you fall in the-in between catagory-choose the the next largersize.There will be a difference in weight and diameter,and your arrow rest may need adjustment.

What bow are you shooting, you need to make sure to have the right spine.

Go to a pro shop.
They will get you the correct ones for your set up.

On Target 2 Software. Do a google search for it. This software will get you everything you need.

Those manufacturer diagrams are junk when it comes to spine.

go to your local achery shop and they could help you get set up