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
Full Length resize
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="bigedp51" data-source="post: 1158055" data-attributes="member: 28965"><p>You can also remove the standard low mounted expander and size the case and then use a expander die to expand the case necks.</p><p><span style="font-family: 'Arial'"><span style="font-size: 10px"></span></span></p><p><span style="font-family: 'Arial'"><span style="font-size: 10px"><u><u><u><u><u><u><u><u><a href="http://www.accurateshooter.com/technical-articles/reloading/expander-mandrels-and-neck-tension/" target="_blank">Expander Mandrels and Neck Tension within AccurateShooter.com</a></u></u></u></u></u></u></u></u></span></span></p><p><span style="font-family: 'Arial'"><span style="font-size: 10px"></span></span></p><p><img src="http://i122.photobucket.com/albums/o254/bigedp51/sinclairexpander350_zps65ab7f4c.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p></p><p>You can also use a Lyman type "M" die to expand the necks, and the slightly larger step helps when seating the bullets and reducing runout. Normally when using a type "M" die you push the neck over the first step and then using the second step to flare the case mouth for cast bullets. With jacketed bullets you just slightly start the neck on to the first step. And this opens the case mouth slightly and the bullets seats with less effort and reduces runout during the seating operation.</p><p></p><p><img src="http://i122.photobucket.com/albums/o254/bigedp51/Various3_zpsi85oz4p6.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>The two methods above push downward when expanding the necks and the Sinclair expander die allows the mandrel to float and self center in the case neck. The type "M" die has a fixed mandrel but I have seen no increase in runout using either type expander.</p><p></p><p>I use the Lyman type "M" die when loading for my AR15 A2 HBAR to help decrease any runout when seating bullets.</p><p></p><p>Another part of the low mounted expanders is if there are any dings in the extractor groove the shell holder will cause the case to tip even more. With the Forster high mounted expander system this greatly reduces any influence the shell holder and defects in the extractor groove have. Camp Perry trick for reducing neck runout on chewed up semiauto brass. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p></blockquote><p></p>
[QUOTE="bigedp51, post: 1158055, member: 28965"] You can also remove the standard low mounted expander and size the case and then use a expander die to expand the case necks. [FONT=Arial][SIZE=2] [U][U][U][U][U][U][U][U][URL="http://www.accurateshooter.com/technical-articles/reloading/expander-mandrels-and-neck-tension/"]Expander Mandrels and Neck Tension within AccurateShooter.com[/URL][/U][/U][/U][/U][/U][/U][/U][/U] [/SIZE][/FONT] [IMG]http://i122.photobucket.com/albums/o254/bigedp51/sinclairexpander350_zps65ab7f4c.jpg[/IMG] You can also use a Lyman type "M" die to expand the necks, and the slightly larger step helps when seating the bullets and reducing runout. Normally when using a type "M" die you push the neck over the first step and then using the second step to flare the case mouth for cast bullets. With jacketed bullets you just slightly start the neck on to the first step. And this opens the case mouth slightly and the bullets seats with less effort and reduces runout during the seating operation. [IMG]http://i122.photobucket.com/albums/o254/bigedp51/Various3_zpsi85oz4p6.png[/IMG] The two methods above push downward when expanding the necks and the Sinclair expander die allows the mandrel to float and self center in the case neck. The type "M" die has a fixed mandrel but I have seen no increase in runout using either type expander. I use the Lyman type "M" die when loading for my AR15 A2 HBAR to help decrease any runout when seating bullets. Another part of the low mounted expanders is if there are any dings in the extractor groove the shell holder will cause the case to tip even more. With the Forster high mounted expander system this greatly reduces any influence the shell holder and defects in the extractor groove have. Camp Perry trick for reducing neck runout on chewed up semiauto brass. :) [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
Full Length resize
Top