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#5703814 - 04/16/15 08:13 PM Vertical dispersion
dee Offline
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Registered: 04/10/10
Posts: 4665
Loc: Red River way
Shot at 1000 a few days ago and despite wind going from S/SW to N/NE in between 2 5rd strings the dispersion was nice. I usually don't chrono much for sd or es but shoot for groups. This shows that those are likely pretty low.

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#5703866 - 04/16/15 08:37 PM Re: Vertical dispersion [Re: dee]
FiremanJG Offline
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Registered: 12/16/08
Posts: 17893
Loc: Wolfe City, TX
Not much dispertion. What was the wind on the clock in relation to the target, during each string?
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#5703888 - 04/16/15 08:49 PM Re: Vertical dispersion [Re: dee]
dee Offline
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Registered: 04/10/10
Posts: 4665
Loc: Red River way
I shoot straight due north so say 7:00 then 2:00. Wind speeds were 5-10mph then steady 5mph.
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#5704179 - 04/17/15 03:19 AM Re: Vertical dispersion [Re: dee]
Big Fitz Offline
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Registered: 12/06/09
Posts: 2008
Loc: McKinney, TX
Nice shooting! What caliber?
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#5704295 - 04/17/15 07:19 AM Re: Vertical dispersion [Re: dee]
dee Offline
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Registered: 04/10/10
Posts: 4665
Loc: Red River way
Thanks. It's a 7mm-08 Ackley Improved.
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#5704404 - 04/17/15 08:28 AM Re: Vertical dispersion [Re: dee]
WileyCoyote Online   content
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Registered: 09/01/04
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Loc: The Dogwood Capital of Texas
Nice problem to have at that distance...
Ron
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#5704466 - 04/17/15 08:51 AM Re: Vertical dispersion [Re: dee]
JTPinTX Offline
Woodsman

Registered: 04/01/15
Posts: 182
Loc: TX Panhandle
Wind up here in the panhandle has been pretty brutal lately. Not just strong but switching around like what you are talking about.

Nice vertical for sure though.

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#5704496 - 04/17/15 09:12 AM Re: Vertical dispersion [Re: dee]
FiremanJG Offline
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Registered: 12/16/08
Posts: 17893
Loc: Wolfe City, TX
Did the two low impacts happen with the 2 o'clock wind?

We're you using the Mil scope?
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#5704550 - 04/17/15 09:50 AM Re: Vertical dispersion [Re: dee]
dee Offline
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Registered: 04/10/10
Posts: 4665
Loc: Red River way
Yes the low 4 came from the north wind the top 4 came during the south wind.

Yeah the mil scope is still on it for now.
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#5706218 - 04/18/15 09:33 AM Re: Vertical dispersion [Re: FiremanJG]
Big Fitz Offline
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Registered: 12/06/09
Posts: 2008
Loc: McKinney, TX
Originally Posted By: FiremanJG
Did the two low impacts happen with the 2 o'clock wind?


Is this the norm for a bit higher impact with a tail wind and lower impact with a head wind? Why? Just wondering if this is simply due to the affects on velocity over the entire flight path or other?
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Originally Posted By: syncerus
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#5706271 - 04/18/15 10:34 AM Re: Vertical dispersion [Re: dee]
dee Offline
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Registered: 04/10/10
Posts: 4665
Loc: Red River way
Yes it is depending on wind speed. A tail wind can lift and a head wind can deflect low.
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#5706336 - 04/18/15 12:37 PM Re: Vertical dispersion [Re: dee]
blackcoal Online   content
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Registered: 01/19/12
Posts: 7568
Loc: 60 Mi North of DFW
Originally Posted By: dee
Yes it is depending on wind speed. A tail wind can lift and a head wind can deflect low.


Happy to see you recognize the effect of head and tail winds. Months ago I brought up the subject of head and tail wind and several members jumped me saying that had no effect on elevation.
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#5706739 - 04/18/15 08:19 PM Re: Vertical dispersion [Re: blackcoal]
dee Offline
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Registered: 04/10/10
Posts: 4665
Loc: Red River way
Originally Posted By: blackcoal
Originally Posted By: dee
Yes it is depending on wind speed. A tail wind can lift and a head wind can deflect low.


Happy to see you recognize the effect of head and tail winds. Months ago I brought up the subject of head and tail wind and several members jumped me saying that had no effect on elevation.


The two ranges I use face either due north or due south so I see it a lot. It might not be much but it's noticeable.
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#5706748 - 04/18/15 08:27 PM Re: Vertical dispersion [Re: dee]
blackcoal Online   content
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Registered: 01/19/12
Posts: 7568
Loc: 60 Mi North of DFW
^^^ Yep, Joyce Hornady discussed it back in 1973 I believe.
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#5708009 - 04/19/15 10:00 PM Re: Vertical dispersion [Re: dee]
Judd Offline


Registered: 01/22/09
Posts: 10761
Loc: Sachse, TX
I'd be willing to bet your ES/SD is low...that's wind.
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