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
9 o'clock vs. 3 o'clock wind drifts different with same wind velocity???
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="Bart B" data-source="post: 616461" data-attributes="member: 5302"><p>It's called "gyroscopic precession." </p><p></p><p><a href="http://en.wikipedia.org/wiki/Precession" target="_blank">Precession - Wikipedia, the free encyclopedia</a></p><p></p><p>A well balanced bullet keeps its spin axis parallel to its trajectory. You can see this best by watching a football that's passed and spins perfectly. It noses over throughout its trajectory just like bullets do.</p><p></p><p>As the long axis of a right-hand spinning bullet keeps pointing down from the bore axis it was fire at, that causes the bullet to point to the right. Left-hand twisted bullets "precess" to the left.</p><p></p><p>Note that football has a tiny bit of spin drift, too, but it's barely noticable. You can feel and see this happen as follows. Power up your electric hand drill with a long, 3/8" bit in it. Holding the drill horizontally then quickly point the bit down. Notice the force applied that tends to make the bit point to the right. If your drill's a reversable one, change it to reverse then do this again and note which direction the bit points to.</p></blockquote><p></p>
[QUOTE="Bart B, post: 616461, member: 5302"] It's called "gyroscopic precession." [url=http://en.wikipedia.org/wiki/Precession]Precession - Wikipedia, the free encyclopedia[/url] A well balanced bullet keeps its spin axis parallel to its trajectory. You can see this best by watching a football that's passed and spins perfectly. It noses over throughout its trajectory just like bullets do. As the long axis of a right-hand spinning bullet keeps pointing down from the bore axis it was fire at, that causes the bullet to point to the right. Left-hand twisted bullets "precess" to the left. Note that football has a tiny bit of spin drift, too, but it's barely noticable. You can feel and see this happen as follows. Power up your electric hand drill with a long, 3/8" bit in it. Holding the drill horizontally then quickly point the bit down. Notice the force applied that tends to make the bit point to the right. If your drill's a reversable one, change it to reverse then do this again and note which direction the bit points to. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
9 o'clock vs. 3 o'clock wind drifts different with same wind velocity???
Top