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best cal. to handle the wind

 
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  #1  
Old 04-04-2009, 09:28 PM
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Join Date: Apr 2009
Posts: 1
best cal. to handle the wind

Is there any difference?
Do the heavier rounds take the wind better at long distances?
Just getting into the LRS and need some help from the kind folks on ths web site.
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  #2  
Old 04-04-2009, 09:58 PM
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Join Date: Jul 2004
Location: OHIO
Posts: 2,419
Re: best cal. to handle the wind

Quote:
Originally Posted by dewey edwards View Post
Is there any difference?
Do the heavier rounds take the wind better at long distances?
Just getting into the LRS and need some help from the kind folks on ths web site.
Yes. It is most common to have a caliber, such as 6mm, 6.5mm, 7mm, and 338 as those heavy bullets offer the higher BCs, which is what you want for LRH and bucking the wind.

There are tons of videos available that show brown bears, moose, elk, deer, antelope, rams, all taken with a good old 7mm Remington Magnum with 168 and 180 Berger VLD bullets up to 1000 yards and just beyond. Therefore, it is arguable as to whether or not there is any need for a larger cal or heavier bullet.

But, it wouldn't be any fun if we all had a plain jane 7mm rem mag now would it?
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Derek M.
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  #3  
Old 04-05-2009, 07:11 AM
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Join Date: Mar 2009
Location: Australia
Posts: 28
Re: best cal. to handle the wind

Hello Dewey!

Welcome to the Long Range Hunting Forum!

To answer your question the calibres that are not effected by wind as much usually have higher Ballistic Co-efficients (Like Derek said).

The Ballistic Co-efficient is a measure of drag/air resistance on the bullet. Generally the heavier the bullet, as long as the shape of the bullet is aerodynamic (High BC), the further it can fly with less wind effect.

For example a Flat nosed 200gr (Sierra) .375 has a ballistic co-efficient (BC) of .195, compared to a 300gr(Sierra) .338 hollow point boat tail which has a BC of .768!

However, the hard hitting high recoil rifles are generally not a good starting point to hone your skills, play with these toys at the start and you may throw in the towel.

If you are starting of start with the .22 then work through to .223, 243, .270 etc. These will help adaption to recoil and get marksmanship sorted. I recommend the .22 to start with at 100yds it will react (wind wise) similar to a .308 at long range and help learn the wind, trigger control, breathing etc.
Even if you play with the long range rifles you need to learn wind reading/doping.

This is purely recommendation, it is much cheaper to learn lessons on the .22 than on a .338. Then when you get to the bigger fellas you will be able to rule out marksmanship over adjusting to recoil.

But as Derek said the .338's, .300's, 7mm's and 6mm/6.5mm are big long range contenders. Alot of people are opting for the smaller calibres with less recoil and higher BC's due to being able to keep your sight picture plus longer ability to shoot the rifle.

Hope this is helpful,

CZ

Last edited by Coldzero; 04-05-2009 at 07:14 AM.
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  #4  
Old 04-05-2009, 09:54 AM
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Join Date: Nov 2006
Location: Dayton, Nevada
Posts: 1,794
Re: best cal. to handle the wind

As the other guys said. B.C. is the name of the game. It's more important than caliber for bucking the wind.
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