Cacciatore-
I hope this may help you:
Wapiti bows and limbs are made by Keith Chastain in Colorado. His bows are known for their speed and smoothness especially at longer draw lengths.
The tight radius recurve tip on the Chastain Wapiti bows derives from the bows made by Jean Louthan in the (circa) 1950’s and from the “fish hook” recurve tips that were made by Frank Eicholtz. The idea is to try to make a limb smoother drawing by making the recurve open up later in the draw, which a tight radius recurve and a longer limb will do.
The sleight “wavy-limb” profile in a Chastain limb is an application of the limb designs made by Bill Stewart in his Multi-Cam bows. The idea is that the “wave” or “cam” in a longer limb and the tight radius recurve will cause the bow to break over similar to a compound bow, especially at longer draw lengths.
The limbs on my Bear T/D bows are all made by Chastain. I find them superior to the newer Bear T/D limbs. I've been shooting Bear bows for decades both one piece and T/D's and while I think the shooting characteristics of the older one piece 60" + bows are excellent, I have never really liked the feel of the T/D limbs. I can't objectively comment on the new new one piece bows, as I don't own any.