When does wind not make a difference?
At what speed does wind have no bearing on placement of your shot, primarily for pistol at 25 yards. Some think me crazy for not pulling the trigger on a ten mile an hour day when a slight breeze comes along. I say even that can have an effect.
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What caliber? 0 -
I just know not to spit into the wind...
Wind has a lot of effects on a projectile. It depends on what the projectile is, speed, and weight. Without a doubt the speed and direction of the wind is also a factor.
I would say never.0 -
If you have ever been to Camp Perry to shoot you know wind make a difference.With rifle as the range gets longer wind drift gets larger.However the most change comes in offhand both rifle and pistol because the shooter is being blown around. I have seen it so windy at perry that it has blown the pistol boxes off the bench and even turned the benches over at 25 yards the wind might blow a 45 2 inches but the shooter's arm might be moveing completely off the target. Little wind little drift big wind BIG drift 0 -
Following up on Rafter-S comments: "This is a huge subject that one could go on for hours to cover all the fine points of wind, light and mirage." On trying to decide whether to shoot on a "good" day or a "bad" day, I find it increasingly difficult to find any time to shoot. [:D][:D] So any brief stop in the forest after work is a relief from my routine. Just shooting is enough. If the dirt is kicking up near my target, or whether I nail a stick in two several times in a row or "kick a can" further and further with each shot, just shooting itself is the pleasure. The accuracy is a plus sometimes achieved and sometimes not.
After reading bobski's print, I can now pay closer attention to my 32ACP shooting, which one day will be dead-on and the next, cant hit-a-thing. I never considered clouds. shadow, or light wind.
Here is a link to "A Brief Course in Ballistics".
http://www.horusvision.com/hv.cfm?pg=ballistics
Now, my 2?:
I could picture someone's perception of target becoming altered as a frame of reference, say trees and shrubs, waving in the wind.
@ 75' I can't hit too well except with my .22 Buckmark 5.5", but on this forum and others I've been told 45ACP should outperform the lesser calibers. More mass. So in keeping with an annoying habit of commenting upon subjects in-which my word is often conjecture, I'd say any bullet over 60 gr. should have enough energy to fly 75' with only infinitesimal effects from a 10 m.p.h. wind.
After completing the novel Unintended Consequenses, I'd probably be able to extrapolate a precise deflection of a moving projectile of a known mass traveling at a known velocity, etc. etc...
And there are a couple guys on this forum who will give you the exact formulas, if they see your post. I can probably dig up their user names if they don't post, but I remember when the conversation veered toward bullet design, mass, and caliber, some of the math/physics experts posted pretty complicated formulas.
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zero wind or indoor matches only. 1 mph of wind will effect a shot...any cal. get a hold of wind chart wheel. study it and you can learn to make those shots in the wind and still hit an x. i can. most matches ive shot in had 35 mph L to R crosswinds. actually wind doesnt bother me...its that blasted shadow at different times of the day that throws me![:(]
former air operations officer SEAL Delivery Vehicle Team 2. former navy skeet team, navy rifle/pistol team member. co-owner skeetmaster tubes inc.. owner/operator professional shooting instruction.0 -
Following up on bobski's comments; with rifle shooting at any distance over 50 yards, I prefer a little wind from the side to keep the mirage (light refraction) blown away. I can dope wind and make sight adjustments, but have a terrible time with mirage.
Those "blasted shadows" he mentioned, I think, are the clouds that drift over and cast a dullness over the target (experts refer to this as "light on target") that make you see it at a minutely different place as you did in the bright sunlight. I always try to wait out the cloud, or, if time is running out, make an adjustment in the diopter of the rear sight and go for it.
This is a huge subject that one could go on for hours to cover all the fine points of wind, light and mirage. Bottom line though; the shooter has to learn to shoot in the conditions. Most shooters pick good days to go practice. I try to pick the bad days, figuring if I can learn to shoot in adverse condtions, the matches will always be better than what I'm used to. It's worked so far.
My humble 2.5-cents worth,
Rafter-S
"What is truth? No wonder jesting Pilate turned away. The truth, it has a thousand faces -- show only one of them, and the whole truth flies away! But how to show the whole? That is the question."
--Thomas Wolfe, "You Can't Go Home Again" (1934)0 -
A head or tail wind will have very little interferance with bullet impact. A crosswind on the otherhand can drift a bullet off the X ring.
If you ain't got a sense of humor you got no business bein here!0 -
There are several Ballistics softwares out there to consult for this very topic. Everyone has an opinion but the math never lies. I've used the Sierra Infinity program for 4 or 5 years and I really like it, the program is easy to use and you can make tons of changes for altitude, humidity, temp., wind etc. Plus you can taylor it to your specific bullet and velocity. 0 -
Remington has a free down load on ballistics http://www.remington.com/NR/exeres/000014d6oqaiyrfliayzavbk/ammunition.asp?NRMODE=Published&NRORIGINALURL=/ammo/ballistics/remshoot.htm&NRNODEGUID={B956047D-96F4-4E59-B625-0BE1A991A136}&NRQUERYTERMINATOR=1&cookie_test=1 this just has to do with factory ammo and can be up graded, but in it, it has a feature that will show you the effects of att. changes. out of all my ball. programs that i have i like this one the best. it not only shows you on a graft, but it has a feature that lets you shoot virtual targets so you can see were it would hit. it's not the type of gun you have in the heat of a battle that counts, only if you have enough ammo for it, lets face it, a gun without ammo is only as good as a base ball bat!!0 -
Answer: When at rest! ie: absolute calm. Even then, the heating and cooling of Mother Earth, will cause movement of air molecules. Best to you. Check with your local Narional Guard gunners on their 105,s. They can tell you how many sensors they use on wind and temp, to insure accuracy. GW. 0
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