Brad,
I shoot a Bob Lee Classic, 60"/55#@28". I previously used Beman MFX 400's - 28 7/8" with 100 grain brass inserts, 155 grain old Bear razorheads with broadhead adapters, 5" shield feathers with 7" wraps (580 grains). They shot perfect.
Now I shoot Easton FMJ 500's - 28 1/8", 100 grain brass inserts, the same old Bear razorheads w/adapters (155grains), and 5" parabolic feathers with 7" wraps (465 grains). They also shoot great!
I used Stu Miller's Dynamic Spine Calculator and the numbers worked perfectly.
I shoot split finger and 8 strand D97. With that, my brace height is 7 7/8", a nocking point of 9/16, and 4 homemade wool siencers (2 on top/2 on bottom) placed 12" and 17" from the tips.
Love them Lee's, good luck!