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
Reloading
How much bullet needed in the neck?
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="J E Custom" data-source="post: 1221515" data-attributes="member: 2736"><p>It has more to do with the surface contact the brass has with the bullet.</p><p></p><p>The smaller the caliber the longer the neck needs to be to have enough bearing surface.</p><p></p><p>It is traditional to have approximately one caliber of neck length but some cartridges fall far short</p><p>of that Example= the 300 win mag has a neck length of .264 (.044 shorter than .308). Your 280 AI is .346 (.062 longer than the .284 diameter)</p><p></p><p>The main thing is to have enough neck engagement to position the bullet straight and control the</p><p>base of the bullet while entering the rifling. If the bullet you want to use has a short body and you have a long freebore the body of the bullet can leave the neck before it engages the rifling and can cause accuracy issues. the same goes for a neck that is to short.</p><p></p><p>As far as the bullet gripping in relation to the bullet, the bigger the bullet diameter the less neck length is required because of the surface area of the neck (3.1416 X the bullet diameter x the neck length will give you the surface area of the neck.</p><p></p><p>With the .284 diameter I would not recommend going that short.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1221515, member: 2736"] It has more to do with the surface contact the brass has with the bullet. The smaller the caliber the longer the neck needs to be to have enough bearing surface. It is traditional to have approximately one caliber of neck length but some cartridges fall far short of that Example= the 300 win mag has a neck length of .264 (.044 shorter than .308). Your 280 AI is .346 (.062 longer than the .284 diameter) The main thing is to have enough neck engagement to position the bullet straight and control the base of the bullet while entering the rifling. If the bullet you want to use has a short body and you have a long freebore the body of the bullet can leave the neck before it engages the rifling and can cause accuracy issues. the same goes for a neck that is to short. As far as the bullet gripping in relation to the bullet, the bigger the bullet diameter the less neck length is required because of the surface area of the neck (3.1416 X the bullet diameter x the neck length will give you the surface area of the neck. With the .284 diameter I would not recommend going that short. J E CUSTOM [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
How much bullet needed in the neck?
Top