Forums
New posts
Search forums
What's new
Articles
Latest reviews
Author list
Classifieds
Log in
Register
What's new
Search
Search
Search titles and first posts only
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
spin drift
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="Shawn Carlock" data-source="post: 191389" data-attributes="member: 4"><p>TJBILL,</p><p> </p><p>Good question. My belief is that you will have wind drift + spin drift to the right and wind drift - spin drift to the left. Without having a side impact wind tunnel to shoot in I don't know if you would be able to accurately determine if a side wind increases/decreases spin drift or not. I have not seen it but that doesn't mean it doesn't exist. At 1500 yards for instance in the calm, spin drift might be 12" for a given cartridge. Now add wind drift of say 60" for a total of 72". If there is additional spin drift from wind forces I believe it to be minor in effect maybe a couple of inches. I believe that any additional spin drift caused by wind effects would be so small a number that compensating for it would be nearly impossible. We are talking about less than a 1/4 moa. Since you did not have enought to worry about I'll give you one more. In you scenerio of a 9:00 wind of say 10 mph and a RH twist barrel, you will have the following factors to deal with:</p><p>bullet drop (raw drop)</p><p>wind drift</p><p>spin drift</p><p>elevation variance due to 9:00 wind and RH twist (it will be lower impact and you will need additional elevation)</p><p>Oh yea a couple of other little issues, are you up or downhill? God forbid that the wind is blowing over a terrain feature like a ridge or draw. Oh you say the wind is not blowing the same direction at your target? Blah, Blah, Blah. If you can make good first round hits in less than perfect conditions past 1000 yards, pat yourself on the back. Anymore when I here that Long Range Hunting is the "easy" way out I just shake my head at the uneducated. Glad you guys are getting setup for 08 early.</p></blockquote><p></p>
[QUOTE="Shawn Carlock, post: 191389, member: 4"] TJBILL, Good question. My belief is that you will have wind drift + spin drift to the right and wind drift - spin drift to the left. Without having a side impact wind tunnel to shoot in I don't know if you would be able to accurately determine if a side wind increases/decreases spin drift or not. I have not seen it but that doesn't mean it doesn't exist. At 1500 yards for instance in the calm, spin drift might be 12" for a given cartridge. Now add wind drift of say 60" for a total of 72". If there is additional spin drift from wind forces I believe it to be minor in effect maybe a couple of inches. I believe that any additional spin drift caused by wind effects would be so small a number that compensating for it would be nearly impossible. We are talking about less than a 1/4 moa. Since you did not have enought to worry about I'll give you one more. In you scenerio of a 9:00 wind of say 10 mph and a RH twist barrel, you will have the following factors to deal with: bullet drop (raw drop) wind drift spin drift elevation variance due to 9:00 wind and RH twist (it will be lower impact and you will need additional elevation) Oh yea a couple of other little issues, are you up or downhill? God forbid that the wind is blowing over a terrain feature like a ridge or draw. Oh you say the wind is not blowing the same direction at your target? Blah, Blah, Blah. If you can make good first round hits in less than perfect conditions past 1000 yards, pat yourself on the back. Anymore when I here that Long Range Hunting is the "easy" way out I just shake my head at the uneducated. Glad you guys are getting setup for 08 early. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
spin drift
Top