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="Mikecr" data-source="post: 887815" data-attributes="member: 1521"><p>Off axis engraving and bore/groove diameters.</p><p>Believe it or not, bullets can enter throats at angles and travel down the bore off axis. This represents a large misalignment once the bullet is released. It dampens out, but in the meantime drag is higher and nothing further will recover deceleration resulting.</p><p></p><p>Barrels are made with different bore/groove diameters for cal, and bores expand more/less depending on load and barrel contour. Bullets obturate in them to last dimension before release, which slightly affects it's form. So the bullet might release a bit shorter, and bigger than cal, or a bit longer, and smaller than cal.</p><p></p><p>This is potential for different effective BC from that finished barrel.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 887815, member: 1521"] Off axis engraving and bore/groove diameters. Believe it or not, bullets can enter throats at angles and travel down the bore off axis. This represents a large misalignment once the bullet is released. It dampens out, but in the meantime drag is higher and nothing further will recover deceleration resulting. Barrels are made with different bore/groove diameters for cal, and bores expand more/less depending on load and barrel contour. Bullets obturate in them to last dimension before release, which slightly affects it's form. So the bullet might release a bit shorter, and bigger than cal, or a bit longer, and smaller than cal. This is potential for different effective BC from that finished barrel. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Chatting and General Stuff
General Discussion
Do Bullets Go To Sleep?
Top