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
Twist vs Bullet Weight Question
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="Doom2" data-source="post: 2938644" data-attributes="member: 108323"><p>For those interested it is important to understand that the twist equations that are normally used (Greenhill, Miller) are not geometry specific to the bullet and are geared to generate a minimum required twist rate. They are semi-empirically derived and contain approximations based on experimental data. To properly analyze the Sg and required twist requires more data about the bullet than is typically available. Miller was kind enough to allow his work to be posted on the JBM site. </p><p></p><p>[URL unfurl="true"]https://jbmballistics.com/ballistics/bibliography/articles/miller_stability_1.pdf[/URL]</p></blockquote><p></p>
[QUOTE="Doom2, post: 2938644, member: 108323"] For those interested it is important to understand that the twist equations that are normally used (Greenhill, Miller) are not geometry specific to the bullet and are geared to generate a minimum required twist rate. They are semi-empirically derived and contain approximations based on experimental data. To properly analyze the Sg and required twist requires more data about the bullet than is typically available. Miller was kind enough to allow his work to be posted on the JBM site. [URL unfurl="true"]https://jbmballistics.com/ballistics/bibliography/articles/miller_stability_1.pdf[/URL] [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Twist vs Bullet Weight Question
Top