I zero dead on at 75 yards. I have had to “thread the needle” on numerous shots on deer. This means taking into account limbs that may be between me and the deer. I have seen pencil thick limbs deflect a 180 grain round nose 30 caliber bullet enough to go from a perfect center of the chest shot to a clean miss at 75 yards away. It’s rare to ever have a clear path between you and the deer. Good clear optics, and knowing the exact path of your bullet helps a lot.