RE: bowtech users
It's not a Liberty but here's my specs:
'04 Patriot 30" 71#
29" Easton Lightspeed 340, 100 grain head, wraps, 3" feathers, Lumenok - 405 grains - 303fps
29" ACC 3-60s, 100 grain head, 3" feathers - 432 grains - 294 fps
29" ACC 3-71s, 125 grain head, wraps, 5" feathers, Tracer nock - 500 grains - 272 fps
For durability, straightness and consistent weight go with the ACCs.