I recently bought a set of 40lb acs Rc epics here on trad gang. On my Morrison 15 in riser they are 43 lbs. I draw 28 and with a 530 grain arrow I am getting 163 fps. Which from my experience with many bows over the chrony, is very impressive. I had to use a 400 spine arrow to get a stiff enough spine.
So I also just received to day a dryad 15 riser with the same limbs in 45 lb. started with a 400 spine arrow but it looks like I may need to go to a 340 spine as its still week n I am almost out of arrow shaft .
Freind, what spine arrows for a corresponding weight limb do you end up with ?