I hope this is the right place for this question. My brother in law and my father in law, both tell me this. When sighting in a rifle, does it matter if the elevation plane between the rifle and target are on a level plane? They have told me, that the target can be at a much higher or lower angle than the rifle and it will still sight in correctly. Meaning that I would not have to compensate for the difference, that I could still sight a rifle in straight. Like the angle difference means nothing and should still sight in straight. I don't believe that for one second. I believe you should sight in and shoot on as level of a plane as possible even though real time shots during hunting would be different. Who can tell me the truth on this one?