RE: Sighting in with Field Point vs. Broadhead
Depends on how well your bow is tuned. Any bow can shoot field points concistantly even if it's radically out of tune (I knew a tournament archer that purposefully tuned his rig for a 4" knock high left tear through paper.) Broadheads are a different story, if the bow is out of center shot they will take steering control of your arrow and go wild. I get the bow shooting tight groups then fine tune my rest to get the broadheads and field points shooting the same point of impact.