Hey, Ryan
I made a hickory backed osage Holmegaard bow that would loosen your fillings it had so much hand shock. I made another, with exact same dimensions, instead I used hickory backed maple. The maple bow was sweet as garden peas... no hand shock at all. Who knows?! I do find most osage bows (either self or laminate) are more shocky than whitewoods. I was always told it was the tiller and heavy limbs or tips, which increased hand shock. Also, poorly tillered limbs, which are out of time, cause more hand shock. I would think that a larger grip, with longer fades, would decrease hand shock.
Bye the bye, I retillered the cartilage wrecking osage Holmegaard, and hand shock went way down... still there, but much less.