So Cyclone brings up an important point. Since the magnetic pull doesn't effect the weight of the aluminum and carbon shafts, yet it does effect my broadheads some, does this mean I really have a higher FOC if I shoot toward the Magnetic North Pole and less if I shoot toward the South Pole. And since this must be true I really have to watch out if I'm shooting East or West and make the appropriate allowances. This really explains how I missed some deer over the last 30 years. I knew I was better than I appeared to be. It wasn't my fault at all... It was Mother Nature. I think we should just dig up this magnetic pole now that we have GPS's. We don't need compasses anymore. Then I would become a real hunter. If I shoot West do I allow for side ways pull to the right or do I allow for a simulated lower FOC.