NO Wind Windage ZERO

[teele1]

Hers's my question, due to limited range time/hours, would a 50 yard windage ZERO suffice for a 100 yard windage zero? or....just find a no wind time at 100 ...OR?

 

[SSL]

If the wind direction and strength is the same and constant all the way to the 100-yard mark you could figure windage reasonably close. While not as variable as at more distant targets, wind strength can vary at different sections within that 100-yard distance and affect your "true" windage setting. Windage will still be a "moving target" on a day to day basis as conditions change.

 

[boltfluter]

Really hard to read anything at 50 yds in my experience. I would do whatever it takes to get a good 100 yd zero and have more confidence in the shot. A win win in my book.

Paul

 

[farmerjohn]

Hunting a TRUE wind zero in my limited 70 years experience is akin to hunting the perfect woman, you find one that will work and convince yourself that it is the right one......

 

[Dusty Stevens]

If the wind direction and strength is the same and constant all the way to the 100-yard mark you could figure windage reasonably close. While not as variable as at more distant targets, wind strength can vary at different sections within that 100-yard distance and affect your "true" windage setting. Windage will still be a "moving target" on a day to day basis as conditions change.

Not true. Wind at the muzzle affects the shot waaay more than that same wind at 50yds and that wind is a lot more than the same wind at 100yds.

 

[SSL]

Not true. Wind at the muzzle affects the shot waaay more than that same wind at 50yds and that wind is a lot more than the same wind at 100yds.

True, but my point was that variables increase with distance, so a guesstimate built at 50 yards will show increasing error with distance and changing conditions. May have expressed my self poorly.

 

[xswanted]

What are you looking to do here?

I guess I’ve used 50 yards to “zero” windage many times over the years and have not problems with it.

It’s a good place to start anyway.

If a guy was going to try shoot an animal way out there or compete at log range then I think you’ll need to back it up to get a good wind read.

However 50 yards will get you minute of most hunting situations accurate.

 

[JFrank]

Not true. Wind at the muzzle affects the shot waaay more than that same wind at 50yds and that wind is a lot more than the same wind at 100yds.

That would need to be a stiff breeze at the muzzle

 

[Ned Ludd]

Solely for the purpose of knowing zero in a no-wind condition, the turret windage setting at 50 yd is going to be very close to that at 100 yd. It might change slightly as the distance increases farther, but even there it shouldn't be a huge difference. The problem with determining zeroes at short range is that it's more difficult to precisely pinpoint the exact zero setting, whether windage or elevation, because typical group sizes will often be larger than a single turret click value. However, you're only talking about a click or two variance if you're very careful when sighting in, so a short range zero can work just fine for many applications.

 

[Liven The Dream]

Old Match Rifle Shooter .
I would always get a 200 yard no wind Zero .
Sometimes hard to do .
Then Zero our the Wind and Elevation knobs .
This is the Starting point for your shooting .

 

[Dusty Stevens]

That would need to be a stiff breeze at the muzzle

Lets just say for conversation sake that a puff of wind say 5mph hit your bullet at 5yds and no wind anywhere else. it will push your shot out waaaaay farther than that same wind hitting it at say 100yds. And the farther out it is the less difference it makes by an exponential amount.

 

[JFrank]

Brother Dusty
I understand defection and it's effect over distance, I'm just thinking it would take more than a 5 mph wind at the muzzle to drastically upset a projectile traveling at nearly Mach 3 . Isn't that about what a table fan puts out? Now if it's sustained from the muzzle to say 50 yards you bet it will. You being a short range guy I would imagine you have plenty of wind reading experience in close quarters. Longer range tuning I worry more what's happening at 50 yards and more.

J

 

[Jesse Gietzen]

...I'm just thinking it would take more than a 5 mph wind at the muzzle to drastically upset a projectile traveling at nearly Mach 3 . Isn't that about what a table fan puts out...

you would think. i know with light bullets i've shot left of center on a 50 yard target then right of center on a 100 yard target in a mild (table fan) breeze. surprised me at the time.

 

[grovey]

I believe what he's trying to clarify is that the sooner the wind effects the bullets travel the further it will be pushed off line. EX: Shooting at 100 yds... a 5mph crosswind at the muzzle to the 50yd mark only will push the bullet further than the same 5mph crosswind from the 50yd mark to the 100 yd target.

 

[Falfan2017]

It matters what your trying to hit. For hunting? Sure 50 is fine. You're most likely going to have less than an inch of wind deflection from 50 to 100.

 

[JFrank]

It matters what your trying to hit. For hunting? Sure 50 is fine. You're most likely going to have less than an inch of wind deflection from 50 to 100.

 

[JFrank]

Federal Ballistic Calculator says a 243 with 75 gr at 3300ish fps
10mph full value wind .3 Moa at 50 yards 1.1 at 100 yards

 

[Dusty Stevens]

Brother Dusty
I understand defection and it's effect over distance, I'm just thinking it would take more than a 5 mph wind at the muzzle to drastically upset a projectile traveling at nearly Mach 3 . Isn't that about what a table fan puts out? Now if it's sustained from the muzzle to say 50 yards you bet it will. You being a short range guy I would imagine you have plenty of wind reading experience in close quarters. Longer range tuning I worry more what's happening at 50 yards and more.

J

you ever wonder why a lot of rimfire BR rifles have bloop tubes on them- the ones with scopes? its not for sight radius like on a palma rifle. and yes even those fans on everybody's bench can have a huge impact so not even a 5mph wind can and will make a difference. being from the short range BR world is how I do know this.

 

[hogpatrol]

I shoot a lot of .17 Fireball with 25 & 30 gr bullets out to 400 yards. It's amazing how much just a wisp of air will move those tiny bullets.

 

[JFrank]

you ever wonder why a lot of rimfire BR rifles have bloop tubes on them- the ones with scopes? its not for sight radius like on a palma rifle. and yes even those fans on everybody's bench can have a huge impact so not even a 5mph wind can and will make a difference. being from the short range BR world is how I do know this.

Good stuff, that's why you're the man"
Much Respect
J