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Precision Long Range Shooting & the Coriolis Effect
Am Shooting Journal ^ | 11/29/2016 | J Hines

Posted on 11/29/2016 11:26:22 AM PST by w1n1

You may not be taking this into Account in Precision Long Range Shooting. If you’re into long range shooting, its important to understand how the “Coriolis effect” affects your shot at 1000 yards or greater.

The Coriolis effect is the rotation of the earth and the movement of a target downrange from the shooter. This is another element that a long distance shooter has to consider for along with wind, rain, snow, distance, elevation and a many other factors. Accounting for all these factors signifies the skill sets needed for precision long range shooting.

In simple layman's term:
"if you're shooting West, your target’s gonna rotate up and towards us, which is gonna cause the bullets to hit lower."
"if you're facing east, the target's going to be dropping and slightly moving away, which is gonna cause the hits to be higher."

Jeremy from Gunwerks points out these small errors can cause huge misses at greater distances than 1000 yards if you don't pay attention to. Could be that buck that you're missing out on. See the video footage here.


TOPICS: Hobbies; Outdoors
KEYWORDS: guns; longrangeshooting
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To: w1n1
I only worry about the Coriolis Effect when shooting this bad boy:


21 posted on 11/29/2016 11:59:27 AM PST by Yo-Yo (Is the /sarc tag really necessary?)
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To: Redbob

Why cuz you’ll probably just hurt it?


22 posted on 11/29/2016 12:00:05 PM PST by ichabod1 (Make America Normal Again)
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To: w1n1

Too bad he misuses the term ‘Coriolis Effect’ ...


23 posted on 11/29/2016 12:01:56 PM PST by TexasGator
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To: batterycommander

What always gets me about estimating wind is you know what the wind is doing where you are, but how do you know what it’s doing downrange?


24 posted on 11/29/2016 12:01:58 PM PST by ichabod1 (Make America Normal Again)
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To: wrench
At the equator, the Earth's moving at ~1000mph. Do the math for any given particular latitude.

Old joke: A hunter sees a bear directly South, and while checking his gun, the bear moves 50 years West.

The hunter aims directly South, and fires, killing the bear.

What color was the bear?

25 posted on 11/29/2016 12:02:22 PM PST by Calvin Locke
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To: Steely Tom

Texas has some extremely fast hogs!


26 posted on 11/29/2016 12:03:23 PM PST by Pollster1 ("Governments derive their just powers from the consent of the governed")
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To: Pollster1
Texas has some extremely fast hogs!

Yeah, you gotta watch out for them bad boys.

27 posted on 11/29/2016 12:05:10 PM PST by Steely Tom ([VOTE FRAUD] == [CIVIL WAR])
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To: w1n1

I don’t have the math chops anymore but I would like to see the actual calculation for 1000 yards and less than 2 second flight time.


28 posted on 11/29/2016 12:05:13 PM PST by dangerdoc ((this space for rent))
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To: Calvin Locke
...The bear moves 50 years West.

Say what?

29 posted on 11/29/2016 12:07:58 PM PST by thulldud
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To: Yo-Yo
The "Paris Gun" in WWI used such a corrosive charge, that each shell was progressively larger to make up for the loss of bore material. Each shell was numbered as such.

That kept them busy doing the calculations to fire each round because of all the variables, mass, shape, charge, even though the aiming point was basically the City of Paris.

30 posted on 11/29/2016 12:08:47 PM PST by Calvin Locke
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To: mad_as_he$$

Counterclock in the northern hemisphere and clockwise in the southern hemisphere. (Just saying, if you are not sure of your direction due to cloudcover, disorientation, etc...


31 posted on 11/29/2016 12:10:41 PM PST by richardtavor
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To: thulldud
Dang.

I've been catching "them" for "then" today, but missed "years" for "yards"?

32 posted on 11/29/2016 12:10:46 PM PST by Calvin Locke
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To: Redbob
Could be that buck that you're missing out on.

At least a target 1,000 yards away is a challenge. Much more so than shooting 60 yards with a scoped high-power rifle. That's not very sporting.

33 posted on 11/29/2016 12:13:37 PM PST by FoxInSocks ("Hope is not a course of action." -- M. O'Neal, USMC)
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To: GoldenPup

Pie r round. Cornbread r squared.


34 posted on 11/29/2016 12:15:13 PM PST by SpinnerWebb (Winter is coming)
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To: mad_as_he$$

Wouldn’t there be the same distance of error but on a left to right or right to left plane from center of target if you were shooting north to south or south to north?


35 posted on 11/29/2016 12:15:51 PM PST by Hot Tabasco
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To: w1n1

What about solar storms and cosmic rays?
They must be taken into consideration, as well...............


36 posted on 11/29/2016 12:17:04 PM PST by Red Badger
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To: Steely Tom

That would have to be pretty high velocity...............


37 posted on 11/29/2016 12:17:57 PM PST by Red Badger
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To: Pollster1; Steely Tom

Don’t forget the effects of gravitational pull from nearby large bodies.............


38 posted on 11/29/2016 12:18:54 PM PST by Red Badger
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To: w1n1
Jeremy from Gunwerks points out these small errors can cause huge misses at greater distances than 1000 yards if you don't pay attention to. Could be that buck that you're missing out on.

If the buck you're shooting at is more than 1000 yards away, learn to be quieter when you walk.
39 posted on 11/29/2016 12:22:15 PM PST by Ellendra (Those who kill without reason cannot be reasoned with.)
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To: w1n1
Whew! Bad enough that we have to worry about the Coriolis effect flushing the toilet. Now I have to have a toilet with me to determine whether I am in the northern hemisphere or southern hemisphere and adjust the AR-50 sights accordingly.
40 posted on 11/29/2016 12:22:40 PM PST by SuperLuminal (Where is another agitator for republicanism like Sam Adams when we need him?)
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