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Your scopes are not and should never be mounted parallel to the centerline of your bore in a vertical plane. The centerline of the bore is always angled up with the vertex of that angle somewhere out in front of you. Gravity starts to act on the projectile the instant it exits the bore hence it "drops" away from that centerline instantly. You "sight in" for a desired distance by changing that scope/bore angle with the internal adjustments on the scope. If you run out of adjustment like the guys that shoot goofy distances (1000 plus) then you get your self a scope base with more angle built into it. It's mostly geometry with a little physics thrown in to keep it interesting. I personally prefer to get closer.

[QUOTE="Paul Heppner, post: 2784355, member: 39469"] Your scopes are not and should never be mounted parallel to the centerline of your bore in a vertical plane. The centerline of the bore is always angled up with the vertex of that angle somewhere out in front of you. Gravity starts to act on the projectile the instant it exits the bore hence it "drops" away from that centerline instantly. You "sight in" for a desired distance by changing that scope/bore angle with the internal adjustments on the scope. If you run out of adjustment like the guys that shoot goofy distances (1000 plus) then you get your self a scope base with more angle built into it. It's mostly geometry with a little physics thrown in to keep it interesting. I personally prefer to get closer. [/QUOTE]

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