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
Neck Sizing Vs. Full Length Sizing and Neck Tension
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="dstancu" data-source="post: 2873062" data-attributes="member: 9273"><p>OK, here is my take from my own observations and using my own thinking (that's why good God gave us a brain), plus listening to what others are saying (especially those who most likely know what they're talking about!):</p><p>Allowing the case to grow until it matches the chamber has to do with the complete fire forming. Apart from the advantages (no need to insist on those), there are two problems with that:</p><p>1. The length of the case may increase too much - solved by trimming/chamfering/deburring to whatever dimension one wants within acceptable limits, as long as one sticks to that dimension</p><p>2. There is virtually no clearance between the chamber and the case (its neck, shoulder and body, all the way to the case head)</p><p>By only neck sizing and just bumping the shoulder back (e.g. 0.002" or whatever one desires) <em>every single time</em>, after a couple firings the body of the case <em>really </em>matches the walls of the chamber (although the neck and shoulders are modified), runing the risk of problematic chambering of the cartridge next time.</p><p>Full length sizing, even when used sparingly every time (and that is all it takes usually), will eventually <em>touch also the body of the case</em>, not just the neck and shoulder, keeping also the body in good dimensions which means providing a minimal clearance between case and chamber all around. <em>That </em>is what virtually eliminates the pains of stuck cases down the road.</p><p>I noticed that visually myself, there are very faint but visible longitudinal marks on the body of the case after FL sizing, they confirm the die eventually touches/works that part too.</p></blockquote><p></p>
[QUOTE="dstancu, post: 2873062, member: 9273"] OK, here is my take from my own observations and using my own thinking (that's why good God gave us a brain), plus listening to what others are saying (especially those who most likely know what they're talking about!): Allowing the case to grow until it matches the chamber has to do with the complete fire forming. Apart from the advantages (no need to insist on those), there are two problems with that: 1. The length of the case may increase too much - solved by trimming/chamfering/deburring to whatever dimension one wants within acceptable limits, as long as one sticks to that dimension 2. There is virtually no clearance between the chamber and the case (its neck, shoulder and body, all the way to the case head) By only neck sizing and just bumping the shoulder back (e.g. 0.002" or whatever one desires) [I]every single time[/I], after a couple firings the body of the case [I]really [/I]matches the walls of the chamber (although the neck and shoulders are modified), runing the risk of problematic chambering of the cartridge next time. Full length sizing, even when used sparingly every time (and that is all it takes usually), will eventually [I]touch also the body of the case[/I], not just the neck and shoulder, keeping also the body in good dimensions which means providing a minimal clearance between case and chamber all around. [I]That [/I]is what virtually eliminates the pains of stuck cases down the road. I noticed that visually myself, there are very faint but visible longitudinal marks on the body of the case after FL sizing, they confirm the die eventually touches/works that part too. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
Neck Sizing Vs. Full Length Sizing and Neck Tension
Top