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
Do you really need a runout gauge??
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="Buster Hemlock" data-source="post: 1643181" data-attributes="member: 109327"><p>A lot of full length dies squeeze down the case neck way more than needed. A buddies Hornady 300 win mag dies were necking them down to .312 and then with the button pulling them back out to .334 outside diameters. Runout on the brass was .001-.002 without the button but would go to .005-.007" after pulling the button through. The amount of force needed to pull the button back through the extremely undersized brass isn't even and pulls necks crooked. Most factory 300 win mag chambers have a neck diameter of .340". The solution is either send your dies off with some fired brass and have them honed or switch to bushing dies. Removing the button and using a expander mandrel is another solution but your still over working your brass and cracked necks will happen, most likely before primer pockets let go so brass longevity will suffer.</p></blockquote><p></p>
[QUOTE="Buster Hemlock, post: 1643181, member: 109327"] A lot of full length dies squeeze down the case neck way more than needed. A buddies Hornady 300 win mag dies were necking them down to .312 and then with the button pulling them back out to .334 outside diameters. Runout on the brass was .001-.002 without the button but would go to .005-.007" after pulling the button through. The amount of force needed to pull the button back through the extremely undersized brass isn't even and pulls necks crooked. Most factory 300 win mag chambers have a neck diameter of .340". The solution is either send your dies off with some fired brass and have them honed or switch to bushing dies. Removing the button and using a expander mandrel is another solution but your still over working your brass and cracked necks will happen, most likely before primer pockets let go so brass longevity will suffer. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
Do you really need a runout gauge??
Top