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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
spin drift
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<blockquote data-quote="Shawn Carlock" data-source="post: 191393" data-attributes="member: 4"><p>Agustus,</p><p> </p><p> You are right on the money with the issue of the reticule and turrets not being plum. If the reticule is not square with the turrets it can and will cause windage changes as you dial up or down. Everyone squares the reticle to the action/barrel but what really needs to happen for dial shooters is the turrets need to be square to the action / barrel. I have seen reticules out of square far enough to cause 6 moa windage at 1000 yards!!!! There is a word to describe scopes like that but they don't allow it here. Several issues inside the scope can cause slight windage variations. Spring tension against the erector tube is one, systems with split leaf single springs will start to show this after the spring shows fatigue and puts uneven pressure on the tube. Scopes with single springs pushing at 45 degrees opposite the turrets seldom have this happen. Ultimately you want to have this issue squared away before you start dialing in your rifle.</p></blockquote><p></p>
[QUOTE="Shawn Carlock, post: 191393, member: 4"] Agustus, You are right on the money with the issue of the reticule and turrets not being plum. If the reticule is not square with the turrets it can and will cause windage changes as you dial up or down. Everyone squares the reticle to the action/barrel but what really needs to happen for dial shooters is the turrets need to be square to the action / barrel. I have seen reticules out of square far enough to cause 6 moa windage at 1000 yards!!!! There is a word to describe scopes like that but they don't allow it here. Several issues inside the scope can cause slight windage variations. Spring tension against the erector tube is one, systems with split leaf single springs will start to show this after the spring shows fatigue and puts uneven pressure on the tube. Scopes with single springs pushing at 45 degrees opposite the turrets seldom have this happen. Ultimately you want to have this issue squared away before you start dialing in your rifle. [/QUOTE]
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