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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Scope Levels- Why?
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<blockquote data-quote="LRNut" data-source="post: 1892043" data-attributes="member: 3230"><p>Ok, I just did the math using trig and similar triangles...a 45 degree cant on the rifle, assuming a scope height of 1.75" and a 200 yard zero would result in horizontal error of 3.7" at 800 yards - no thanks. A 10 degree rifle cant (with the scope reticle leveled) would result in a one inch error at 800 and a 1.5" error at 1200. Not huge, but if you are trying to hit a ten inch plate at 800 and only shoot 4 inch groups, you are giving up 1/3 of your allowable wind call error 50% of the time (the other 50% you increased it by 1/3). And in real life, after practicing, you might think you are seeing spin drift and learn to compensate.</p><p></p><p>So I will concede not as dramatic as I thought. </p><p></p><p>Again, this is for the reticle level but the rifle canted.</p></blockquote><p></p>
[QUOTE="LRNut, post: 1892043, member: 3230"] Ok, I just did the math using trig and similar triangles...a 45 degree cant on the rifle, assuming a scope height of 1.75" and a 200 yard zero would result in horizontal error of 3.7" at 800 yards - no thanks. A 10 degree rifle cant (with the scope reticle leveled) would result in a one inch error at 800 and a 1.5" error at 1200. Not huge, but if you are trying to hit a ten inch plate at 800 and only shoot 4 inch groups, you are giving up 1/3 of your allowable wind call error 50% of the time (the other 50% you increased it by 1/3). And in real life, after practicing, you might think you are seeing spin drift and learn to compensate. So I will concede not as dramatic as I thought. Again, this is for the reticle level but the rifle canted. [/QUOTE]
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Scope Levels- Why?
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