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
Bullet stability
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="MajorSpittle" data-source="post: 1952115" data-attributes="member: 53101"><p>I imagine SD/SG as a QB throwing a football. SG is how fast it is spinning and SD is how tight the "spiral/wobble" is on the ball when it leaves his hand. They both play on each other. Enough SG (spin) will keep the ball from tumbling if it isn't a tight spiral (SD) or a tight enough spiral and you don't need as much spin to keep it stable.</p><p></p><p>Not sure how correct I am but I can sleep at night and feel better about how one rifle can stabilize a heavier bullet but a second rifle that is identical can't with the same muzzle velocity. I also think this would explain why with less air pressure you need less SG because there is less force applied on the nose of the bullet working against the SG. Also why less SG is need as the bullet slows because the force on the nose of the bullet lessens with speed. Also why you need less SG with a more blunt nose on a bullet.... </p><p></p><p>I have watched 7.62 tracer rounds go down range and cork screw through the air about 2 feet up and 2 feet right only to finish the corkscrew and be relatively on target by 600 meters. I would assume this is an example of great SG and poor SD.</p></blockquote><p></p>
[QUOTE="MajorSpittle, post: 1952115, member: 53101"] I imagine SD/SG as a QB throwing a football. SG is how fast it is spinning and SD is how tight the "spiral/wobble" is on the ball when it leaves his hand. They both play on each other. Enough SG (spin) will keep the ball from tumbling if it isn't a tight spiral (SD) or a tight enough spiral and you don't need as much spin to keep it stable. Not sure how correct I am but I can sleep at night and feel better about how one rifle can stabilize a heavier bullet but a second rifle that is identical can't with the same muzzle velocity. I also think this would explain why with less air pressure you need less SG because there is less force applied on the nose of the bullet working against the SG. Also why less SG is need as the bullet slows because the force on the nose of the bullet lessens with speed. Also why you need less SG with a more blunt nose on a bullet.... I have watched 7.62 tracer rounds go down range and cork screw through the air about 2 feet up and 2 feet right only to finish the corkscrew and be relatively on target by 600 meters. I would assume this is an example of great SG and poor SD. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Bullet stability
Top