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Reticle Perpendicularity by Darrell Holland
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<blockquote data-quote="AJ Peacock" data-source="post: 224947" data-attributes="member: 4885"><p><strong>Do 2 wrongs make a right? (canted scope and canted rifle)</strong></p><p></p><p>Mkollman, Woods,</p><p></p><p></p><p></p><p></p><p>Actually, it makes a 'little' bit of difference. Let's say I have a rifle that is setup with the reticle canted a bit because I always hold the rifle a little canted, 'do 2 wrongs make a right?'. </p><p></p><p>If I sight the rifle in for 100yds and shoot at zero clicks, 10MOA up and 10MOA down at 100yds, I will see bullet holes in the bullseye and 10MOA high and low of the bullseye. But there is more to the story. </p><p></p><p>Since I am canting the rifle, I'm moving the center line of the scope away from the center line of the bore (bullet path); for the sake of argument lets say the actual crosshair is 1/2" to the left of the bore of the rifle when I shoot. </p><p></p><p>The bullet will move from right to left (in relation to the line of the scope) exactly 1/2" from the time it leaves the muzzle until it strikes the bullseye at 100yds. When I decide to shoot 1000yds, I'll crank my scope up the right number of MOA for 1000yds and fire away. I will actually hit to the left of the bullseye 4 1/2" at 1000yds, because the line of the scope and the flight of the bullet intersect at 100yds and get further apart at longer distances.</p><p></p><p>If the centerline of your scope and the bore are only 1/10" apart, you will probably never see the difference, but it will be there.</p><p></p><p>I hope that all made sense.</p><p></p><p>AJ</p></blockquote><p></p>
[QUOTE="AJ Peacock, post: 224947, member: 4885"] [b]Do 2 wrongs make a right? (canted scope and canted rifle)[/b] Mkollman, Woods, Actually, it makes a 'little' bit of difference. Let's say I have a rifle that is setup with the reticle canted a bit because I always hold the rifle a little canted, 'do 2 wrongs make a right?'. If I sight the rifle in for 100yds and shoot at zero clicks, 10MOA up and 10MOA down at 100yds, I will see bullet holes in the bullseye and 10MOA high and low of the bullseye. But there is more to the story. Since I am canting the rifle, I'm moving the center line of the scope away from the center line of the bore (bullet path); for the sake of argument lets say the actual crosshair is 1/2" to the left of the bore of the rifle when I shoot. The bullet will move from right to left (in relation to the line of the scope) exactly 1/2" from the time it leaves the muzzle until it strikes the bullseye at 100yds. When I decide to shoot 1000yds, I'll crank my scope up the right number of MOA for 1000yds and fire away. I will actually hit to the left of the bullseye 4 1/2" at 1000yds, because the line of the scope and the flight of the bullet intersect at 100yds and get further apart at longer distances. If the centerline of your scope and the bore are only 1/10" apart, you will probably never see the difference, but it will be there. I hope that all made sense. AJ [/QUOTE]
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