I ran both sets of limbs of my TT through the chronograph with three different arrows. Once I get the arrows tuned I'll run them through again in a larger group to get a better average but these numbers give me a good idea of what I've got. Since I had it set up I ran the older RER recurve through it as well.
Note, none of the arrows were tuned to either bow. I just had them around and decided to shoot them. However, according to the dynamic spine calculator, the 250's should be perfect for the 51# limbs and 150's for the 45# limbs. It's nice that both those limb/arrow combinations are right about the same speed. It's eery how accurate the arrow speed is in that calculator.
Heritage 150
434 gn
100 gn tip
30"
Heritage 250
509 gn
145 gn tip
30.25"
Trad 600
356 gn
100 gn tip
30.5"
TT 45#
150 - 183.5 fps
250 - 172 fps
600 - 199 fps
TT 51#
150 - 193 fps
250 - 180 fps
600 - 206 fps
RER 47#
150 - 180 fps
250 - 167 fps
600 - 190 fps