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
Hunting
Long Range Hunting & Shooting
Diminishing returns on reloading dies
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="jebel" data-source="post: 1585631" data-attributes="member: 106189"><p>Think of it in terms of the amount of work done to the neck. Working the metal induces hardness, which eventually causes brittleness and failure. </p><p></p><p>A non-bushing die does this:</p><p>1) On the downstroke, push the neck in beyond the desired point. </p><p>2) On the upstroke, pulls an expander ball through the neck, pushing it out to the desired point. </p><p></p><p>A bushing die with the expander ball removed does this:</p><p>1) on the downstroke, push the neck in to the desired point. Done. Less work on the neck. </p><p></p><p>It takes a bit of work to identify the exact desired point. The goal is to shape the neck to around .001-.003" smaller than the diameter of the bullet. This is termed neck tension because it's the tension gripping the bullet when you squeeze it in there. Because different brands/lots of brass differ in their neck thickness, you must measure this to set the die to size right. </p><p></p><p>The bushings are the sizers. They come in different increments to size the neck just right.</p></blockquote><p></p>
[QUOTE="jebel, post: 1585631, member: 106189"] Think of it in terms of the amount of work done to the neck. Working the metal induces hardness, which eventually causes brittleness and failure. A non-bushing die does this: 1) On the downstroke, push the neck in beyond the desired point. 2) On the upstroke, pulls an expander ball through the neck, pushing it out to the desired point. A bushing die with the expander ball removed does this: 1) on the downstroke, push the neck in to the desired point. Done. Less work on the neck. It takes a bit of work to identify the exact desired point. The goal is to shape the neck to around .001-.003” smaller than the diameter of the bullet. This is termed neck tension because it’s the tension gripping the bullet when you squeeze it in there. Because different brands/lots of brass differ in their neck thickness, you must measure this to set the die to size right. The bushings are the sizers. They come in different increments to size the neck just right. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Hunting
Long Range Hunting & Shooting
Diminishing returns on reloading dies
Top