Jason,
I am shooting CX Terminator Select 4560"s with a 100 grain brass insert and 125 grain tips. The length is 30", note that the brass adaptors add 1/4 inch, but the 30" has that figured in. These arrows seem to work well for me at my 28" draw using high performance bows that are 52 to 54 pounds. My total arrow weight is 527 grains. These flew well out of a Kabekona, Centaur, Morrison Dakota, Big East recurve, and a Bob Lee recurve, all in the 52 to 55 pound range. I have a Kanati coming to me that is 52 @ 28", I'll let you know how it goes when I get it.
Doug