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
Virgin brass vs fired brass
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: 1409122" data-attributes="member: 1521"><p>If you were to measure close, new -vs- fully fire formed, and sized as you plan, you would see that all dimensions have changed. This affects capacity directly.</p><p>Along with this, the brass grain length has changed(affecting hardness), and clearances have changed. Combined, there will be a difference in the pressure curve rise, given different energy use to fill the chamber with your brass(far more 'contained' at that point). So don't bother load development with all this changing. Take your brass to stable first.</p><p></p><p>Where a cartridge is small to mid size capacity, with a fastest powder that fills the case, most of a target result/barrel timing was influenced within the pressure peak.</p><p>With bigger to overbore cartridges, the pressure peak itself contributes less & less to target results. More slower powder.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 1409122, member: 1521"] If you were to measure close, new -vs- fully fire formed, and sized as you plan, you would see that all dimensions have changed. This affects capacity directly. Along with this, the brass grain length has changed(affecting hardness), and clearances have changed. Combined, there will be a difference in the pressure curve rise, given different energy use to fill the chamber with your brass(far more 'contained' at that point). So don't bother load development with all this changing. Take your brass to stable first. Where a cartridge is small to mid size capacity, with a fastest powder that fills the case, most of a target result/barrel timing was influenced within the pressure peak. With bigger to overbore cartridges, the pressure peak itself contributes less & less to target results. More slower powder. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
Virgin brass vs fired brass
Top