Shooting in my 3006 today at 100 with 165 Partitions at about 2850.
There was about 20mph wind coming mostly from behind and over my right shoulder at about 4 to 6 o'clock.
I put 5 in an inch group at 2" high, which is where I wanted. Ill let yall tell me what the horizontal likely was.
Im good to go with it and I hope so cause Im about to be toting it around for 14 days. But I am curious and I figure it would be a fun one for yall to talk about. Im not really up on this and wouldnt dream of talking about wind drift at the distances some of yall shoot.
If yall want to expand the question out to 200 and 300 yards go ahead.

90deg 10mph is roughly .5” so 20mph would be about an 1”
45 degree angle would be .5”
<45 degrees means <.5”

Fed premium lists their 165 partition at 2830’fps muzzle. With 1.7 inches drift @ 100 with a 90 degree 20 mph wind. Pending the wind angle anywhere from .4 to 1.2 inches.

Rear quartering wind, I'd say about 1/2 inch to the left.

2 inches if you didn't flinch.

Without running through a ballistic calculator, and without having any previous dope, I would guess less than what would matter at 100 yards. Less than 2" at 200 yards, and less than 4" at 300.

Unless the gun's off, Paul's answer should be pretty correct. 0" -.75" or you need to shoot it again.

Not enough to matter. Probably not enough to see in a 1” group. I bet the center of that group didn’t move more than 1/4” with a variable wind from 4 to 6 o’clock. Probably what was more noticeable was the group size slightly opening up.

At that wind angle it may have moved the group 1/4" to 1/2" at 100 yards. It may not have moved the group at all.

That wind angle at 500 to 800 yards is not going to cause a big wind hold. In fact, a 5 mph wind at 3 or 9 o'clock will cause a larger wind hold than a 20 mph at 5 o'clock.

I don't like to guess, I like to calculate! A 4 to 6 o'clock wind is a big swing. Let's say it was 5 o'clock, which is a 50% of full value. For a full value wind, the bullet will drift .8" for a 10 mph, so 20 mph would be 1.6". If it was 20 mph from the 5 o'clock, it would be 50% of full value, so the bullet would drift .8" left. If the wind was more 4 o'clock, then it would drift left 1.4". (.1.6" times .866).

Once I learned this wind clock and the percentages on it, my first round hits went way up at longer ranges. I calculate to 1 mph on all my dope charts. I have a bullet drift value in mils for 1 mph. I figure out the wind speed and direction, and do the math (often times in my head), and apply the wind hold in my reticle. It's that simple. This method is much more precise than guessing and is pretty easy to calculate when you break it down.

30-06, 165 Part., 2850 fps
Range Drop Windage
(yd) (in) (in)
0 -1.8 10 mph
50 0.7 0.2
100 2 0.8
150 2 1.8
200 0.7 3.3
250 -2.2 5.2
300 -6.6 7.7
350 -12.9 10.7
400 -21.1 14.2
450 -31.5 18.4
500 -44.3 23.3
550 -59.7 28.9
600 -77.9 35.2

I saved one of those you posted quite some time ago Chad, that’s what I was working off of.

I really appreciate the feedback guys. I agree with most that its probably not enough to matter but I was curious to understand the concept in case it mattered for future considerations. Im trying to up my game on this ballistic/shooting stuff so trying to learn.

Chad, I really appreciate the chart. I guess the wind pie chart thing is generic but the list is specific to my situation.
Ive seen many charts for my 3006 through the years but Ive never seen one show only a 4.9" drop at 300 when 2" high at 100. More like 7 to 9".
Am I interpreting something incorrectly on your example???

Edit: never mind you are talking about chads. I only thought I knew why chads was wrong 🤣

Double edit:

Welcome! Sorry, I had the G7 BC entered as the G1. I fixed it. If you are 2" high at 100, your true zero is 215 yards. I've never been a big fan of the "Hunters" zero, but it works for some shooters.

Range Drop Windage
(yd) (in) (in)
0 -1.8 10 mph
50 0.7 0.2
100 2 0.8
150 2 1.8
200 0.7 3.3
250 -2.2 5.2
300 -6.6 7.7
350 -12.9 10.7
400 -21.1 14.2
450 -31.5 18.4
500 -44.3 23.3
550 -59.7 28.9
600 -77.9 35.2

Chad, I know you and others are not a fan but its very good for most of us. Thanks a lot for the chart. Bobo too.

I looked at it three times, and thought I found difference , ha missed that one.

I did opposite last week At 500. Had g1 instead of g7 and was .8 MOA high, I couldn’t figure out why🤣, then got home and figured it out

Yes. I'm loading all the 243 Win ammo for Night Crew and their hunting videos. They run a 55 grain Nosler Ballistic Tip and it's pushing ~3900 fps. They sight in high at 100 yards to be able to hold MPBR on coyotes out to 300 yards. It's point and shoot out to 300. So it does work. I just prefer the mil holds for exact distances on my rifles.

The difference in Chad and Bobos charts seem a fair amount different. Somewhat with the drop but mostly with the wind. Any ideas?

The difference is environmental. Chad probably has his set to his local range(elevation, temp. Etc) and mine I just used generic sea level. my wind is set to 90 degree 10mph.

I also used g1

One chart says at 300 the drop is 6.6 and other is 7.05, so not much.
One chart says at 400 the drop is 21.1 and other 21.72, so not much.
On wind one says at 300 drifts 7.7 and other is 5.06, so a good bit of difference to me.
On wind one says at 400 drifts 14.2 and other is 8.56, so a big difference to me.

Could environmental make that much difference or is one chart just more correct for whatever reason?

I ran another chart in a different program, and I came up with .8" for a 10mph full value cross wind. I'm not sure why there's a difference.

I would “assume” that all those charts could be different just cause of human error on input or it’s just an in exact science.
Just seems the difference at 400 on wind of 14.2 vs 8.56 is too significant to be unexplainable.

It's 100% exact science. You want to calculate any holds for drop and drift. If I know the wind speed and angle, I'll be on target at any distance. I missed a pig at ~1660 yards up on a cliff in the canyons in West Texas. The wind call was spot on, but my range estimation was off about 30-40 yards. The bullet went directly over the back of the pig by about .5 mil. Had I been able to get a laser reading on him, I'd have drilled him. We were already set up and shooting to a mile no problem (7mm-300 Win Mag with 195 Berger).

Here's the Hornady ballistics drop chart

30-06, 165 Part., 2850 fps

Range (yds) Wind Drift (in)
0 0
50 0.2
100 0.8
150 1.8
200 3.2
250 5.2
300 7.6
350 10.5
400 14
450 18.1
500 22.9

If you say it’s an exact science then I believe you.
Assuming it’s an exact science then why does one chart say 14” drift at 400 and another says 8.56”.
As far as I can tell the input data is the same.
One chart almost has to be wrong.
I’m not disputing your knowledge but asking you to share it with me.

Without running the data and looking at the numbers specifically, what they are saying means ballistics is a experimental game. As with any experiment, the numbers are dang reliable for things that are easy to figure out and when you can minimize variables. Gravity and mass are pretty easy to figure, speed is also, however, some of the data is variable such as temp, baro pressure, etc.

If the variables are inputted incorrectly or if the variables are off by a certain amount, or the ballistics coefficients are different from one to the other, then the numbers become different as the experiment is ran.

The ballistics calculators are simply a theoretic experiment though. the experiment doesn't come to reality until you shoot and verify the data to be accurate.

Parts of it are exact. We are operating in a very non perfect changing world.

Im still waiting to know what chart to copy and tape to my stock.....
5.5" difference at 400 is enough to miss the vitals and thats just at 10 mph. Of course, I wont shoot near that far, but this is a learning experience and right now what Ive learned is all charts cant be trusted.
If a sniper was to head shoot a bad guy he better pick the right chart or he misses and maybe hits the good guy. Im still curious if "normal" environmental differences can account for that much difference(5.5" at 400).

Which two charts are you looking at? Chad did mention earlier in this post that he had input the wrong ballistic coefficient. That would cause the skewed results.

Chads updated one and the one Bobo posted.
They appear to have exact same input info except possibly slight difference in environmental.

I been tied up with work. Give me a little time and I will set down and take my time and send you one to 100-400. You want a 2” high zero at 100 correct?

I come up with 13.6" of wind drift at 400 yards with a 10mph wind. Pretty close to Chad's numbers. All up and down the chart, my numbers are really close to Chad's. I looked at Bobo's numbers, and I can't figure out where the variable is that is making his calculations different.

Correct. Thanks Bobo.

Thanks to all. Im out the door to the lease for 3 weeks so I’m not gonna worry too much more about this thread but feel free to keep it going.
I’ll just leave y’all with my last target.
The bottom 3 with lower bullseye was for fouling after cleaning.
The upper 5 pretty much show the approximate 1/2” wind drift that most thought.
Of course, with my poor shooting, not being positive where it shot without wind, and the small sample size, that group means about nothing to prove wind drift but good to know the charts confirm it.

Free, DOPE is an acronym for “data on previous engagements”. In layman’s terms that means real time notes taken at the range are assimilated for reliable data. That trumps any “programs” that may or may not be exact with your setup. There is no substitute for range time for the shooters that can get down to it.

Smokey, always appreciate your comments.
I DO understand what dope means but I do appreciate you making sure and spelling it out for others as well.
I have shot this same rifle(exclusively) for 50 years and this same reload recipe for 30 years, but I don’t shoot a lot.
I have shot enough to know “pretty close” what this setup will do out to 300.
What I have not done, and reason for this thread, is shoot for research(dope) in the wind.
I rarely shoot much over 200 so I know enough about wind at that distance to get by.
What got the thread a little deeper into the charts than intended was there was a big difference in some of the info.
Alls good.

This is a dope thread.

Dope: slang for cool
Dope: slag for idiot
dope: acronym for data on previous engagement
dope: gotta be smoking some to get the different numbers in this thread

I've been at the range all day. I ran 2 different programs, and came up with .8" at 100 yards for 10 mph full value wind drift with the data you posted. If the wind was at your 4 to 6 o'clock, it will be less than this, depending on the wind angle. My answer is find multiple ballistic programs and run the data through them and see what numbers you get. I've run it 3 times now and have the same data.

Thanks Chad, and others.

3 weeks…. Man I wouldn’t know what to do with three weeks to hunt

Good luck

Shooter has the 165 partition at 0.3670 in my library, not .410 like mfg

I would have nothing to offer on that but would be curious to know more. I’m a sponge for info.

Some manufacturers have a habit of embellishing a bit on ballistic coefficient numbers.

This is the kind of stuff I need to know about.

And velocity, too. My Hornady 7prc precision hunter ammo was listed at 3k fps on the box, but only did 2800 on the Chrono from a 24" barrel.

I'm actually really disappointed in that one.

Nosler is bad about that.

Sierra is not telling lies, but they are still using a G-1 drag function. Everyone else will give you G-1 and G-7. Use the G-7 when possible.

Hornady and Berger tell the truth on their BC's.

Ouch I’m 2842 w/20” but hand load 175eldx

Velocity lies are the norm more than the exception.

https://texashuntingforum.com/forum...-believe-the-velocity-labeled-on-the-box

I was at the range yesterday. My Garmin Xero had your 178gr ELD-X 300 WSM ammo with an average spread of 3012 fps. Not far off from your published velocity on the box of 3000 fps. Can't wait to try the ammo out this weekend on our Snow Urial Ram hunt in South Texas

Yes, Nosler is the absolute WORST for correct G1 BC numbers.

Something to know. G1 BC is velocity dependent. Meaning, as the bullet slows down, the BC decreases, (a lot in some cases). The faster you push a bullet, the higher the G1 BC is. (See any data that Sierra posts on their website and you’ll see what I mean). I called Nosler about a bullet and their inflated BC numbers. I asked what velocity it was run at. And their answer was 3800 fps. The bullet I asked about had zero chance of going that fast. But is their G1 number accurate, yes, but only at that inflated speed. In the real world, that bullet could never go that fast. It’s false advertising.

This is why every shooter needs to be running a G7 BC.

And NEVER select a bullet based on BC alone. I can’t tell you how many times I take a phone call about a shooter telling me that they have to shoot a certain bullet because “it has the highest BC and will be the most accurate “. SMH.

I think that the whole premise, until it’s personally tested it’s hypothetical.

The 7 PRC has been the most F’d up cartridge from the start. Hornady came out with ammo that was too hot for most firearms. They were blowing primers and locking up bolts. They dropped their load dawn and kept the same speed on the box. I have customers calling me all the time asking about it. It’s an eye opener once they put a chrono on it.

There are many shooters who want the 7 PRC to be running fast close to 28 nosler speeds. They “read on the internet” it was a fast round. And when you start chopping barrels short for suppressors, it slows it down even further.

I have one customer who is a freakin’ Ricky Bobby shooter. It’s gotta go fast. If 2900 fps is possible, he thinks 3000 fps is possible and that’s what he wants. I finally told him to get a 28 Nosler and stop messing with the 7 PRC (after he bought 3, 7 PRC rifles!)

Really good to hear!! I try to get that velocity on the box as close to what I think it will be. Good luck on your hunt!

Chad

In my very limited experience it seems I always see a G1 but only sometimes see G7. Do all brands give a G7?

Hornady and Berger do. Some others may. I look up the Litz G7 numbers from his book. You can also search for them online. Most are posted.