I have some Easton Carbon Raider, 55/75's, and some 65/80's. There are no other markings on the arrows.
Are 55/75's the same as 340's?
Are 65/80' the same as 300's?
I am trying to use Stu Miller Dynamic spine calculator.
Thanks,
On the arrows I have worked with the 55/75 is basically a 400. I would say the 65/80 is about a 340 or maybe a little less. A 300 is about a 75/95. That may vary one arrow to the next, but that has been how the GT and Beman arrows I shoot compare for me.
Thanks
You can verify for sure, by calling Easton directly.