Wind correction on the clock

Write out all the brackets on your dope card. Guessed 7 mph on the first target and needed 10? Okay what's the 10 mph hold for the next target? Keep going from there.

Yep, brackets with multiple columns for different wind speeds.

Gets a bit trickier when the targets aren't all in a row and you have to start to think about wind angle changes in addition to wind speed changes. Then you have to evaluate whether that increase to .9 at 430 yards was due to a wind speed increase or if it was due to the wind pivoting to more full value. If it was a pivot, what does that do to the wind angle of your 630 yard target? Increased value, decreased value, pivoted to the other side of the target?

I have a gun mounted dry erase card. I will write down my low and high wind and then average it in my gun. If I need more I’ll switch to my high wind call. Usually it’s pretty close

Fastest way for me without even looking at my dope card and wind Brackets, is that the yardage gap from target 1 to target 2 is 200 yards. I will add a tenth for every 100 yards between targets. This is very helpful in troopline scenarios. Biggest thing is recognizing the the patterns in your wind brackets and it all becomes second nature on the clock.

You had to hold 50% more than planned. If the next target is the same angle add 50% more to your intal call, .9 becomes 1.35

Niles Coyote said:

You had to hold 50% more than planned. If the next target is the same angle add 50% more to your intal call, .9 becomes 1.35

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Do you do that math on the fly? Reason i ask is I'm terrible at Percentages.

Dot3 said:

What is the go to method for making a wind correction-while on the clock-that is good for multiple distance targets? For example, all things being equal, I make a wind call of 7 mph that will require .6 at 430 yds and .9 at 630 yds. But it takes .9 to center up the plate at 430. So I know I need to hold more wind at 630, what’s the most efficient way to figure out my new wind hold at 630?

Is it a simple matter of bracketing the wind on a data card? Is there some mental reverse engineering? I’ve got a 5 mph gun, so is it just a matter of adding an extra tenth or two based on my multiples of 5

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Eh, I don't compete...I'm old and I competed for decades in a shotgun sport....I'm a bit over that stage of life.

But, have you not found any of the articles on Gun MPH for wind holds. Basically the first digit of your G1 BC is your Gun MPH. In my case its 6 and this is the quick chart for that ammo. At 800 and beyond, add another .1.

If your BC starts with a 7, then the columns would be 7/14/21/etc.

And the velocities are full wind value...i.e. 90 degree cross wind. Use your wind rose knowledge to know cross wind value of your actual wind based on its direction.

Here is one thread but I believe that there are a number of them...search for Gun MPH and see what you can find

Dot3 said:

What is the go to method for making a wind correction-while on the clock-that is good for multiple distance targets? For example, all things being equal, I make a wind call of 7 mph that will require .6 at 430 yds and .9 at 630 yds. But it takes .9 to center up the plate at 430. So I know I need to hold more wind at 630, what’s the most efficient way to figure out my new wind hold at 630?

Is it a simple matter of bracketing the wind on a data card? Is there some mental reverse engineering? I’ve got a 5 mph gun, so is it just a matter of adding an extra tenth or two based on my multiples of 5

Click to expand...

Generally speaking, in a vacuum (meaning wind is consistent throughout the entire flight)……

Take whatever extra you held at X distance, then add .1 mil for every hundred yards or so.


I.E. your target is at 400yds and you hold .4 wind, but require .8 for a center impact. The difference is .4.

Your next target is at 600yds and you wrote down a .6 hold. You add the .4 that you needed on the 400yd target, plus .2 more since you’re 200 yds further. You’d now hold 1.2



It sounds like a lot, but it’s pretty easy to do. You can also list several wind holds on your arm board in different columns. When you make a correction on your first target, you then start using the appropriate column.

Say that column A has .4, .5, and .6 holds. Column B has .5, .6, and .7. Column C has .6, .7, and .8.

You use column A and hold .4. But it takes .6 to get a center hit. For the rest of the targets you would now use Column C.



Ideally, you’ll use both methods as well as others and good sense of your weapon and environment. After a while, you won’t have to think as much on the clock and and be able to make decisions on the fly with all the info you have available.

I.E. you changed from column A to column C, but you notice the wind seemed to die down a little, so you switch to column B. Or you notice it increased and you add a tenth or three to your column B holds.