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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
Where to level?!
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<blockquote data-quote="JustMe2" data-source="post: 2235158" data-attributes="member: 42494"><p>Think about why you are "leveling" your scope? It's so when you hold over the target, it does not affect windage and yardage at distances in excess of say about 300-500 yards (depending on target size).</p><p></p><p>So, think of an upside down tennis racket. The round part is the barrel and the handle sticking up is the scope ring height above the barrel. Now place your scope on top of the handle. Now rotate the racket left or right 45 degrees and then run your finger up and down the handle and see how it doesn't follow a line straight up and down over the round (barrel) of the racket. This is how your reticle/holdover will move if your scope isn't mounted directly over the barrel and center of the ring height (level).</p><p></p><p>So your goal is to align your reticle with BOTH the center of the ring height and the barrel's center bore (not top of barrel). If not aligned to BOTH, the bullet will move off target when holding over or dialing up.</p><p></p><p>If you tilt the rifle to fit on your shoulder or cheek and then rotate only the scope reticle to be straight up and down, your dialing or holdover will be wrong in both windage and elevation. Your ballistic calculations will not match your scope dialing and you will wonder why. The higher the rings (racket handle), the more exaggerated the error.</p><p></p><p>I hope this exaggerated barrel-ring-reticle alignment example helps you understand what you are "leveling". You are really aligning 3 items and not leveling, you are using a level as an instrument to align. This is what a tall test does. A Tall Test is another instrument that aligns all 3 things for the purpose of dialing up or holdover.</p></blockquote><p></p>
[QUOTE="JustMe2, post: 2235158, member: 42494"] Think about why you are "leveling" your scope? It's so when you hold over the target, it does not affect windage and yardage at distances in excess of say about 300-500 yards (depending on target size). So, think of an upside down tennis racket. The round part is the barrel and the handle sticking up is the scope ring height above the barrel. Now place your scope on top of the handle. Now rotate the racket left or right 45 degrees and then run your finger up and down the handle and see how it doesn't follow a line straight up and down over the round (barrel) of the racket. This is how your reticle/holdover will move if your scope isn't mounted directly over the barrel and center of the ring height (level). So your goal is to align your reticle with BOTH the center of the ring height and the barrel's center bore (not top of barrel). If not aligned to BOTH, the bullet will move off target when holding over or dialing up. If you tilt the rifle to fit on your shoulder or cheek and then rotate only the scope reticle to be straight up and down, your dialing or holdover will be wrong in both windage and elevation. Your ballistic calculations will not match your scope dialing and you will wonder why. The higher the rings (racket handle), the more exaggerated the error. I hope this exaggerated barrel-ring-reticle alignment example helps you understand what you are "leveling". You are really aligning 3 items and not leveling, you are using a level as an instrument to align. This is what a tall test does. A Tall Test is another instrument that aligns all 3 things for the purpose of dialing up or holdover. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
Where to level?!
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