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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Canting - the right answer
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<blockquote data-quote="Bart B" data-source="post: 109661" data-attributes="member: 5302"><p>[ QUOTE ]</p><p>The basic formulas we are using are:</p><p>horizontal projection: X = drop*sin ß</p><p>vertical projection: Y = drop*(1 - cos ß)</p><p>ß = cant angle</p><p></p><p>I think these formulas should be pretty accurate for the small angles we are discussing, normal cant in LR shooting should be 6º or less.</p><p></p><p>[/ QUOTE ]I 'cant' disagree with the above. An excellent review indeed! That's exactly what I've used for over 40 years. And the sight height above bore wasn't considered in my use 'cause it was based on the sights zeroed for the range used.</p><p></p><p>It's a bit fun to intentionally cant a rifle when using aperture sights to make about a half or full minute change in windage when shooting long range (or 100 yards with a rimfire). With a spirit level on the front sight and knowing how much cant angle there is when the bubble's a given amount off center saves coming out of position to make a sight change. In a crosswind situtation, I could cant the rifle a bit into the wind when I feel it pick up; away from the wind when it lets off. Keeping shots centered is a piece of cake doing this.</p></blockquote><p></p>
[QUOTE="Bart B, post: 109661, member: 5302"] [ QUOTE ] The basic formulas we are using are: horizontal projection: X = drop*sin ß vertical projection: Y = drop*(1 - cos ß) ß = cant angle I think these formulas should be pretty accurate for the small angles we are discussing, normal cant in LR shooting should be 6º or less. [/ QUOTE ]I 'cant' disagree with the above. An excellent review indeed! That's exactly what I've used for over 40 years. And the sight height above bore wasn't considered in my use 'cause it was based on the sights zeroed for the range used. It's a bit fun to intentionally cant a rifle when using aperture sights to make about a half or full minute change in windage when shooting long range (or 100 yards with a rimfire). With a spirit level on the front sight and knowing how much cant angle there is when the bubble's a given amount off center saves coming out of position to make a sight change. In a crosswind situtation, I could cant the rifle a bit into the wind when I feel it pick up; away from the wind when it lets off. Keeping shots centered is a piece of cake doing this. [/QUOTE]
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Canting - the right answer
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