I SHOOT A MATHEWS OUTBACK WITH AN 60# POUND PULL AND 28 1/2 INCH DRAW. MY ARROWS ARE BEMAN ICS 400 AT 29". WITH A GRIM REAPER SPLIT FIRE BROADHEAD 100 GR. I WANT TO KNOW IF I SHOULD GET AN OVERDRAW OR REDUCE MY BROADHEAD TO AN 85 GRAIN TO STILL HAVE THE PENITRATION AND HAVE MORE SPEED. I USE QUICK SPIN VANES AND HAVE AN WISKER BUSKIT. BUT IM STAYING WITH THE WISKER BUSIKET.