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Reticle Perpendicularity by Darrell Holland
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<blockquote data-quote="edge" data-source="post: 224671" data-attributes="member: 5030"><p>How about the Leaning Tower of Pisa ? Buildings are built perpendicular to the round Earth so that all gravitational forces keep it from falling over.</p><p></p><p>Think of the reticle (extended) as either passing through the center of the bore or it doesn't! The bullet will exit the bore and fall toward the <u>center</u> of the Earth. It make no difference which way the rifle is pointed, gravity pulls it in a straight line ( in a vacuum).</p><p></p><p>You also are not aiming with the bore, but instead you are using an artificial aiming point some distance away. </p><p>You are sighting on a line that is in-line with the vertical reticle line and not the bore. If the scope reticle is at "some angle" NOT perpendicular, then as you dial up/down you are following a path that is Diagonal to the Bore. There will be a point the the two cross, and then the bullet would fall exactly in line with your intended shot, but you would need to always shoot at that distance to ensure a perfect shot...or compensate left/right for every other shot.</p><p>Also if you tried to "dial up/down", your click distance would not equal exactly that of the scope.</p><p></p><p>edge.</p></blockquote><p></p>
[QUOTE="edge, post: 224671, member: 5030"] How about the Leaning Tower of Pisa ? Buildings are built perpendicular to the round Earth so that all gravitational forces keep it from falling over. Think of the reticle (extended) as either passing through the center of the bore or it doesn't! The bullet will exit the bore and fall toward the [u]center[/u] of the Earth. It make no difference which way the rifle is pointed, gravity pulls it in a straight line ( in a vacuum). You also are not aiming with the bore, but instead you are using an artificial aiming point some distance away. You are sighting on a line that is in-line with the vertical reticle line and not the bore. If the scope reticle is at "some angle" NOT perpendicular, then as you dial up/down you are following a path that is Diagonal to the Bore. There will be a point the the two cross, and then the bullet would fall exactly in line with your intended shot, but you would need to always shoot at that distance to ensure a perfect shot...or compensate left/right for every other shot. Also if you tried to "dial up/down", your click distance would not equal exactly that of the scope. edge. [/QUOTE]
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Reticle Perpendicularity by Darrell Holland
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