RE: Explain this?
The diameter of her carbon arrows will allow the to penetrate deeper in a 3-d target.
A radical cam and bow combo at 43# COULD be more efficient than a 60# bow,yeilding in more downrange energy but I think what the differnce is in this case is diameter.
I do agree that if your bow is creaking after shooting that really light arrow that there might be some damage,due to basically dryfiring your old bow.You really need to have it checked out.It may be getting ready to inflict serious bodily injury.
It may not take much to get rid of the creaking either,but it really needs to be looked at.