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Vertical dispersion
#5703814
04/17/15 01:13 AM
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Joined: Apr 2010
Posts: 6,219
dee
OP
THF Trophy Hunter
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OP
THF Trophy Hunter
Joined: Apr 2010
Posts: 6,219 |
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.
"A vote is like a rifle; it's usefulness depends on the character of the user" Theodore Roosevelt
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Re: Vertical dispersion
[Re: dee]
#5703866
04/17/15 01:37 AM
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Joined: Dec 2008
Posts: 41,083
J.G.
THF Celebrity
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THF Celebrity
Joined: Dec 2008
Posts: 41,083 |
Not much dispertion. What was the wind on the clock in relation to the target, during each string?
800 Yard Steel Range Precision Rifle Instruction Memberships and Classes Available
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Re: Vertical dispersion
[Re: dee]
#5703888
04/17/15 01:49 AM
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Joined: Apr 2010
Posts: 6,219
dee
OP
THF Trophy Hunter
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OP
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Posts: 6,219 |
I shoot straight due north so say 7:00 then 2:00. Wind speeds were 5-10mph then steady 5mph.
"A vote is like a rifle; it's usefulness depends on the character of the user" Theodore Roosevelt
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Re: Vertical dispersion
[Re: dee]
#5704179
04/17/15 08:19 AM
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Joined: Dec 2009
Posts: 5,432
Big Fitz
THF Trophy Hunter
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THF Trophy Hunter
Joined: Dec 2009
Posts: 5,432 |
Nice shooting! What caliber?
I was wrong...on anything technical. Fitz............. is right, ya know............
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Re: Vertical dispersion
[Re: dee]
#5704295
04/17/15 12:19 PM
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Joined: Apr 2010
Posts: 6,219
dee
OP
THF Trophy Hunter
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OP
THF Trophy Hunter
Joined: Apr 2010
Posts: 6,219 |
Thanks. It's a 7mm-08 Ackley Improved.
"A vote is like a rifle; it's usefulness depends on the character of the user" Theodore Roosevelt
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Re: Vertical dispersion
[Re: dee]
#5704404
04/17/15 01:28 PM
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Joined: Sep 2004
Posts: 6,407
WileyCoyote
THF Trophy Hunter
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THF Trophy Hunter
Joined: Sep 2004
Posts: 6,407 |
Nice problem to have at that distance... Ron
It is TIME for Term Limits, cause Politicians are like childrens diapers and for the same reasons...Robin Williams "These are the times that try men's soul's"...Thomas Paine
"Those who fail to learn from History are doomed to repeat it" ....Santayana
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Re: Vertical dispersion
[Re: dee]
#5704466
04/17/15 01:51 PM
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Joined: Apr 2015
Posts: 610
JTPinTX
Tracker
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Tracker
Joined: Apr 2015
Posts: 610 |
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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Re: Vertical dispersion
[Re: dee]
#5704496
04/17/15 02:12 PM
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Joined: Dec 2008
Posts: 41,083
J.G.
THF Celebrity
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THF Celebrity
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Posts: 41,083 |
Did the two low impacts happen with the 2 o'clock wind?
We're you using the Mil scope?
800 Yard Steel Range Precision Rifle Instruction Memberships and Classes Available
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Re: Vertical dispersion
[Re: dee]
#5704550
04/17/15 02:50 PM
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Joined: Apr 2010
Posts: 6,219
dee
OP
THF Trophy Hunter
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OP
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Posts: 6,219 |
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.
"A vote is like a rifle; it's usefulness depends on the character of the user" Theodore Roosevelt
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Re: Vertical dispersion
[Re: J.G.]
#5706218
04/18/15 02:33 PM
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Joined: Dec 2009
Posts: 5,432
Big Fitz
THF Trophy Hunter
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THF Trophy Hunter
Joined: Dec 2009
Posts: 5,432 |
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?
I was wrong...on anything technical. Fitz............. is right, ya know............
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Re: Vertical dispersion
[Re: dee]
#5706271
04/18/15 03:34 PM
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Joined: Apr 2010
Posts: 6,219
dee
OP
THF Trophy Hunter
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OP
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Joined: Apr 2010
Posts: 6,219 |
Yes it is depending on wind speed. A tail wind can lift and a head wind can deflect low.
"A vote is like a rifle; it's usefulness depends on the character of the user" Theodore Roosevelt
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Re: Vertical dispersion
[Re: dee]
#5706336
04/18/15 05:37 PM
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Joined: Jan 2012
Posts: 9,273
blackcoal
THF Trophy Hunter
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THF Trophy Hunter
Joined: Jan 2012
Posts: 9,273 |
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 Greatest Enemy of knowledge is not ignorance, it is the illusion of knowledge.--Stephen Hawking
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Re: Vertical dispersion
[Re: blackcoal]
#5706739
04/19/15 01:19 AM
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Joined: Apr 2010
Posts: 6,219
dee
OP
THF Trophy Hunter
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OP
THF Trophy Hunter
Joined: Apr 2010
Posts: 6,219 |
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.
"A vote is like a rifle; it's usefulness depends on the character of the user" Theodore Roosevelt
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Re: Vertical dispersion
[Re: dee]
#5706748
04/19/15 01:27 AM
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Joined: Jan 2012
Posts: 9,273
blackcoal
THF Trophy Hunter
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THF Trophy Hunter
Joined: Jan 2012
Posts: 9,273 |
^^^ Yep, Joyce Hornady discussed it back in 1973 I believe.
The Greatest Enemy of knowledge is not ignorance, it is the illusion of knowledge.--Stephen Hawking
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Re: Vertical dispersion
[Re: dee]
#5708009
04/20/15 03:00 AM
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Joined: Jan 2009
Posts: 19,165
Judd
#1 Creedmoor Fan
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#1 Creedmoor Fan
Joined: Jan 2009
Posts: 19,165 |
I'd be willing to bet your ES/SD is low...that's wind.
Don't let your ears hear what your eyes didn't see, and don't let your mouth say what your heart doesn't feel
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Re: Vertical dispersion
[Re: dee]
#5708170
04/20/15 10:36 AM
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Joined: Apr 2010
Posts: 6,219
dee
OP
THF Trophy Hunter
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OP
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I'd be a bit nicer of a group if I could read the wind a little bit better. I need a good wind flag since the last one took flight as my mirage reading is a bit lacking and there aren't any natural flags to use.
"A vote is like a rifle; it's usefulness depends on the character of the user" Theodore Roosevelt
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Re: Vertical dispersion
[Re: dee]
#5708454
04/20/15 02:48 PM
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Joined: Dec 2008
Posts: 41,083
J.G.
THF Celebrity
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THF Celebrity
Joined: Dec 2008
Posts: 41,083 |
Aint no wind flags while hunting.
Mirage is your friend, practice, practice, practice. I'm pretty good at reading it but I have, by no means, mastered it.
800 Yard Steel Range Precision Rifle Instruction Memberships and Classes Available
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Re: Vertical dispersion
[Re: dee]
#5708492
04/20/15 03:14 PM
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Joined: Apr 2010
Posts: 6,219
dee
OP
THF Trophy Hunter
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OP
THF Trophy Hunter
Joined: Apr 2010
Posts: 6,219 |
There is no doubt that I need practice but there are downsides for learning at this location for learning mirage. The other place is easy on mirage and foliage reading but it's a canyon draw type range which is troublesome in it's own way.
"A vote is like a rifle; it's usefulness depends on the character of the user" Theodore Roosevelt
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Re: Vertical dispersion
[Re: dee]
#5708574
04/20/15 04:00 PM
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Joined: Dec 2008
Posts: 41,083
J.G.
THF Celebrity
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THF Celebrity
Joined: Dec 2008
Posts: 41,083 |
For sure. Felt a left to right wind at me on a canyon rim, shot, and it was right to left at the target, 600 yards out.
800 Yard Steel Range Precision Rifle Instruction Memberships and Classes Available
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Re: Vertical dispersion
[Re: dee]
#5708636
04/20/15 05:00 PM
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Joined: Apr 2010
Posts: 6,219
dee
OP
THF Trophy Hunter
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OP
THF Trophy Hunter
Joined: Apr 2010
Posts: 6,219 |
It can be the most stressful shooting. I can hit moa or smaller out to the 550yd line then it would go to crap. Same hold side for before put me opposite so I compensated in the reticle and hit off to original poa. Very frustrating on little targets the silhouette and ipsc style steel was no issue though.
"A vote is like a rifle; it's usefulness depends on the character of the user" Theodore Roosevelt
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Re: Vertical dispersion
[Re: dee]
#5708638
04/20/15 05:01 PM
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Joined: Apr 2015
Posts: 610
JTPinTX
Tracker
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Tracker
Joined: Apr 2015
Posts: 610 |
I was shooting and checking dope on my Creedmoor out at my friends ranch here a few weekends ago. He is set up with steel every 100 yards from 100-900. I started at 300 working out, and was perfect all the way out to 700, wind calls pretty much dead on, solid center mass. Held the same call at 800 and was way off the other way. I would shift, and it would go one way. Shift back, go the other. Took 5 rounds to get on steel, and it was the same for my friend. Then we went out to 900 and back to original wind call, and we were both right back on target. The targets were going away up a hill, and zig-zagging across the face of it. Not sure what was going on with the wind at 800, but it was switching and backing, and making it really tough. But just at that distance. Must have just been the way the wind was hitting that hill and coming off of it, but it was pretty crazy.
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Re: Vertical dispersion
[Re: dee]
#5708830
04/20/15 07:39 PM
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Joined: Apr 2010
Posts: 6,219
dee
OP
THF Trophy Hunter
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OP
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Joined: Apr 2010
Posts: 6,219 |
Terrain construction can funnel winds at times causing miscalculation in wind drifts.
"A vote is like a rifle; it's usefulness depends on the character of the user" Theodore Roosevelt
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