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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
Vertical Alignment between Scope/Rifle...??
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<blockquote data-quote="Canhunter35" data-source="post: 1441917" data-attributes="member: 101677"><p>I was doing some thinking about this and put together some numbers if I was to run a canted rifle:</p><p>Using my 308, and say it's canted so the center of the barrel bore is 1/4" right of center of scope. </p><p>Zeroed at 100 means you will be .5" left at 200 as the bullet flight crosses line of sight. This is what I calculated when you factor in spin drift with my 308 and 168amaxs</p><p>1/4 Moa offset due to cant.</p><p>Zeroed at 100.</p><p></p><p>.5" left at 200- .38" from spin drift right= .12" left of poi</p><p></p><p>.75" left at 300- .86" spin drift right= .1" right of poi</p><p></p><p>1" left at 400 minus 1.56" spin drift=.56" right of poi </p><p></p><p>1.25" left at 500 - 2.52"spin drift=1.27" right poi.</p><p></p><p>My conclusion, factoring in the spin drift on right twist barrel and holding a can't for right handed, meaning your barrel is to the right of the scope, it cancels each other out and actually minimizes spin drift.</p><p></p><p>Maybe I did this wrong, I haven't actually canted my rifle, but it's certainly worth looking into. I always dial my spin drift and corealis on my scope and hold for wind, so it really wouldn't be much difference with slightly different dope due to your rifle being canted.</p></blockquote><p></p>
[QUOTE="Canhunter35, post: 1441917, member: 101677"] I was doing some thinking about this and put together some numbers if I was to run a canted rifle: Using my 308, and say it’s canted so the center of the barrel bore is 1/4” right of center of scope. Zeroed at 100 means you will be .5” left at 200 as the bullet flight crosses line of sight. This is what I calculated when you factor in spin drift with my 308 and 168amaxs 1/4 Moa offset due to cant. Zeroed at 100. .5” left at 200- .38” from spin drift right= .12” left of poi .75” left at 300- .86” spin drift right= .1” right of poi 1” left at 400 minus 1.56” spin drift=.56” right of poi 1.25” left at 500 - 2.52”spin drift=1.27” right poi. My conclusion, factoring in the spin drift on right twist barrel and holding a can’t for right handed, meaning your barrel is to the right of the scope, it cancels each other out and actually minimizes spin drift. Maybe I did this wrong, I haven’t actually canted my rifle, but it’s certainly worth looking into. I always dial my spin drift and corealis on my scope and hold for wind, so it really wouldn’t be much difference with slightly different dope due to your rifle being canted. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
Vertical Alignment between Scope/Rifle...??
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