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
Rate of twist
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="sable tireur" data-source="post: 2128018" data-attributes="member: 27307"><p>The formula for RPM and twist rate is: </p><p></p><p>Muzzle Velocity (x) 720/twist rate </p><p></p><p>Example= 2950 x 720 = 2,124,000</p><p> 2,124,000/8 = 265,500 RPM</p><p></p><p>This is perfectly acceptable as an RPM for the 180 class bullets. This will of course depend on the construction of the bullet where a thin skin bullets might require less RPM in order to not destroy itself. Standard Match bullets or Hunting bullets will usually survive easily. </p><p></p><p>Enjoy!</p></blockquote><p></p>
[QUOTE="sable tireur, post: 2128018, member: 27307"] The formula for RPM and twist rate is: Muzzle Velocity (x) 720/twist rate Example= 2950 x 720 = 2,124,000 2,124,000/8 = 265,500 RPM This is perfectly acceptable as an RPM for the 180 class bullets. This will of course depend on the construction of the bullet where a thin skin bullets might require less RPM in order to not destroy itself. Standard Match bullets or Hunting bullets will usually survive easily. Enjoy! [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Rate of twist
Top