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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
Help!! First long range rifle. Issue with Vortex PST vs EGR rings and base
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<blockquote data-quote="bruce_ventura" data-source="post: 640562" data-attributes="member: 34084"><p>After you check the base, move on to the barrel. On high volume production rifles the barrel can be mounted on the receiver crooked. You could easily have 10-12 MOA of alignment error on top of the 20 MOA in the base. </p><p></p><p>With the base removed, place a 24" steel ruler across the side of the receiver and measure the gap between the end of the ruler and the barrel at about 18" from the receiver. Then repeat with ruler on the opposite side and on the top. If the three measurements are not the same value, the barrel was installed in the receiver crooked.</p><p></p><p>If the barrel is pointed up, switch to a zero or 10 MOA base.</p></blockquote><p></p>
[QUOTE="bruce_ventura, post: 640562, member: 34084"] After you check the base, move on to the barrel. On high volume production rifles the barrel can be mounted on the receiver crooked. You could easily have 10-12 MOA of alignment error on top of the 20 MOA in the base. With the base removed, place a 24" steel ruler across the side of the receiver and measure the gap between the end of the ruler and the barrel at about 18" from the receiver. Then repeat with ruler on the opposite side and on the top. If the three measurements are not the same value, the barrel was installed in the receiver crooked. If the barrel is pointed up, switch to a zero or 10 MOA base. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
Help!! First long range rifle. Issue with Vortex PST vs EGR rings and base
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