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
Chatting and General Stuff
General Discussion
Do Bullets Go To Sleep?
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="Michael Courtney" data-source="post: 890040" data-attributes="member: 28191"><p>I don't know. High speed video is the best way to quantify the maximum pitch and yaw angles of bullets in flight. We've produced and reviewed high speed videos to quantify pitch and yaw on a number of bullets, but we haven't noticed any length related trends, but we haven't carefully designed an experiment with bearing surface length as the only variable either. </p><p></p><p>I tend to think that controlling other factors is likely more important. You want a good concentric load with minimal opportunity for the bullet to get misaligned in the bore as it transitions from the case to the rifling, and you want a good crown and a clean release as it leaves the muzzle. As Mike said, you also want to keep the muzzle pressures down either with an appropriate barrel length or a good powder choice. </p><p></p><p>With a given level of maximum pitch and yaw (say 5 degrees), longer bullets will have a greater increase in drag than shorter bullets, because at a given angle, longer bullets have a greater increase in cross sectional surface area than shorter bullets.</p></blockquote><p></p>
[QUOTE="Michael Courtney, post: 890040, member: 28191"] I don't know. High speed video is the best way to quantify the maximum pitch and yaw angles of bullets in flight. We've produced and reviewed high speed videos to quantify pitch and yaw on a number of bullets, but we haven't noticed any length related trends, but we haven't carefully designed an experiment with bearing surface length as the only variable either. I tend to think that controlling other factors is likely more important. You want a good concentric load with minimal opportunity for the bullet to get misaligned in the bore as it transitions from the case to the rifling, and you want a good crown and a clean release as it leaves the muzzle. As Mike said, you also want to keep the muzzle pressures down either with an appropriate barrel length or a good powder choice. With a given level of maximum pitch and yaw (say 5 degrees), longer bullets will have a greater increase in drag than shorter bullets, because at a given angle, longer bullets have a greater increase in cross sectional surface area than shorter bullets. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Chatting and General Stuff
General Discussion
Do Bullets Go To Sleep?
Top