.223 ei drift chart
- Thread starter y2k
- Start date
Any balistic program will give you this value (or a basic one to start with)
I remember a thread with a few free suggestions, but i wouldnt be able to find it.
I use shooterscalculator . com for my drop charts. I tweaked the chart to match my actual drop numbers and then took a screenshot on my phone. They only have one spot for wind. I leave it at 10mph at 90 degrees and then work from there.
If the wind is higher or lower I take that wind value and modify it as needed. Ie if the wind is 5mph (half) I half the given values.
Also remember if the wind is coming in at an angle other that 90 degrees (ie 1 o'clock vs 3oclock on a clock) you have to modify that number down again.
Edit: this was the post I was thinking, turns out it was for a rimfire drop chart. But guys suggested nikon and strelok and jbm.
https://www.canadiangunnutz.com/forum/showthread.php/2369831-creating-a-rimfire-dope-chart-manually
I remember a thread with a few free suggestions, but i wouldnt be able to find it.
I use shooterscalculator . com for my drop charts. I tweaked the chart to match my actual drop numbers and then took a screenshot on my phone. They only have one spot for wind. I leave it at 10mph at 90 degrees and then work from there.
If the wind is higher or lower I take that wind value and modify it as needed. Ie if the wind is 5mph (half) I half the given values.
Also remember if the wind is coming in at an angle other that 90 degrees (ie 1 o'clock vs 3oclock on a clock) you have to modify that number down again.
Edit: this was the post I was thinking, turns out it was for a rimfire drop chart. But guys suggested nikon and strelok and jbm.
https://www.canadiangunnutz.com/forum/showthread.php/2369831-creating-a-rimfire-dope-chart-manually
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What are you searching?
Go here:
ht tp://gundata.org/ballistic-calculator/
Find your bullet info.
Then go here:
ht tps://shooterscalculator.com/ballistic-trajectory-chart.php
Put the bullet data in. Your scope height in. Your zero range in. Set chart to a reasonable range and steps.
Then look at the chart. It gives you drift in inches. And in moa. And in mils.
Then spend some time reading how that number applies to conditions.
If you want a chart on how each mph wind speed pushes the bullet you're probably going to have to make it yourself. And then like I said the wind direction changes all that again. It would be too big to be workable and you would get "analysis paralysis" at every slight change
If you just want to put in a wind speed and angle and get a number you're going to need to download an app and input these numbers anyways.
Alternatively if you're just looking for wind readings for shooting at 100 (random guess since I believe you said 2 inches windage) then just get a couple wind flags. Be consistent with the material and length so you can actually learn. And then see ok when the wind feels like this.. the flag moves like this.. and my bullet does this. Write it down: Describe the wind. Draw the angle of the flag. And measure how far it pushed your bullet.
Go here:
ht tp://gundata.org/ballistic-calculator/
Find your bullet info.
Then go here:
ht tps://shooterscalculator.com/ballistic-trajectory-chart.php
Put the bullet data in. Your scope height in. Your zero range in. Set chart to a reasonable range and steps.
Then look at the chart. It gives you drift in inches. And in moa. And in mils.
Then spend some time reading how that number applies to conditions.
If you want a chart on how each mph wind speed pushes the bullet you're probably going to have to make it yourself. And then like I said the wind direction changes all that again. It would be too big to be workable and you would get "analysis paralysis" at every slight change
If you just want to put in a wind speed and angle and get a number you're going to need to download an app and input these numbers anyways.
Alternatively if you're just looking for wind readings for shooting at 100 (random guess since I believe you said 2 inches windage) then just get a couple wind flags. Be consistent with the material and length so you can actually learn. And then see ok when the wind feels like this.. the flag moves like this.. and my bullet does this. Write it down: Describe the wind. Draw the angle of the flag. And measure how far it pushed your bullet.
Munkey1973
CGN frequent flyer
- Location
- Regina, SK
Berger Bullets has that service for free. If you are using other manufacturers bullets and know their ballistic coefficients and muzzle velocity, then you are good to go. It's a very accurate calculation too. The results it produces is just as accurate as I-snipe that I've been using for years in F Class
coleman1495
CGN Ultra frequent flyer
- Location
- Whitecourt
As mentioned you need a ballistic app. Lots of good options and some free options as well. I believe Vortex has a free ballistic app accessible via internet browser.
Hey that one looks pretty good.
It doesn't have my bullet though so I have to put it in all manually, and if I hit back one too many times leaving a menu it forgets it. (I'm sure if I make an account I could save my load)
But very easy to change distance and wind. Very easy to read. I like it ��
This is the program that I use, it really is good and very close, of course you have to have a wind meter so you can enter proper data and out at 1,000 yards the wind could be doing something very different than where you are sitting so it's still just a starting point, you need a good spotter to call actual windage hold
- Location
- Western Manitoba
The particular chambering or cartridge head stamp has about nothing to do with wind drift - that would be about the particular bullet and its velocity - velocity will change as it goes further out. I do not use apps (I'm probably a luddite!), but I use ballistic tables - so need to know the Ballistic Co-efficient of that bullet and then likely need a muzzle velocity. I am sure that the various "apps" can then do the appropriate math for you. If you are really fussy, can read in Sierra bullet manual how they believe that B.C. of a bullet will be different at different velocities in air. I think some of their bullets list four different B.C. - depending on the velocity.
You, or the software, will be making a number of assumptions - like the wind is exactly the same at muzzle, through the bullet flight path, and at the target. And will assume that wind effect is the same (or predictable) at all distances and velocities. Which may or may not be true. A former PALMA shooter here on CGN told me that the 1,000 yard range at Bisley in England has wind flags every 100 yards. Not uncommon he says, on the 1,000 yard range, to have wind flags pointing one way over first valley, then pointing other way over second valley - the bullet fired at the target, in those circumstances, is going to fly in an "S" path. Shooter and target butt near the ground - mid-range might be several meters above ground - does not matter what the wind speed is on the ground - it matters where the bullet flies.
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