  | Spin drift and Coriolis??? |

03-26-2012, 10:48 PM
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Silver Member
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Join Date: Mar 2010
Location: Eastern Washington
Posts: 205
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Spin drift and Coriolis???
At what yardage do you guys start worrying about adjusting for spin drift and coriolis effect?
Thanks, Jason
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03-27-2012, 01:08 AM
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Silver Member
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Join Date: Aug 2009
Posts: 117
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Re: Spin drift and Coriolis???
I think that I can start to see spin drift around 600 yards if I'm shooting in calm conditions. If I correct for it I'm usually only dialing a click or two at that distance. Depending on what direction you are shooting coriolis can somewhat counteract the spin drift and minimize its effect or compound it
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03-27-2012, 06:36 AM
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Gold Member
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Join Date: Nov 2008
Posts: 990
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Re: Spin drift and Coriolis???
Beyond 1000 yards.
Under that its not an issue.
__________________
scientia est potentia
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03-27-2012, 09:18 AM
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Platinum Member
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Join Date: Feb 2007
Location: Townsend, Montana.
Posts: 6,408
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Re: Spin drift and Coriollis???
Although minimal I can detect spin drift at 500 in steller conditions and it grows to about .5 to .75 moa at 1000 in my rifle. I leave it on as part of my shooting solution in my ballistic program for all shots. Coriollis effects I enable past 1200 yds and it does make a difference especially at a mile.
Jeff
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03-27-2012, 09:24 AM
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Silver Member
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Join Date: Mar 2010
Location: Eastern Washington
Posts: 205
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Re: Spin drift and Coriolis???
Thanks guys those were the stats I was looking for.
Jason
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03-27-2012, 12:46 PM
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Silver Member
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Join Date: Aug 2008
Location: Arvada, Colorado
Posts: 334
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Re: Spin drift and Coriolis???
All good advise. I however leave spin drift and coriolis on at all times. It does not hurt anything to leave these functions on. For me it is one less thing that I have to do in the field.
Most people (NOT ALL) do the majority of their shooting under a 1000 yards. It is to easy to forget to turn these functions on if your not used to using them. This is what I do and works for me.
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03-27-2012, 02:20 PM
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Platinum Member
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Join Date: Feb 2007
Location: Townsend, Montana.
Posts: 6,408
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Re: Spin drift and Coriolis???
I agree with leaving them on , and I do with spin drift. But the reson I choose to switch on Criollis is because I use "shooter" and it takes two more step to get azmuth and enter latitude. I just dont see the need for shots under 1000 so I switch it on for 1200 and beyond. I usually take plenty of time for those long pokes anyway..
Jeff
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