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Rifles, Reloading, Optics, Equipment
Reloading
Are the best presses for minimal run-out necessary?
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<blockquote data-quote="bigedp51" data-source="post: 1807746" data-attributes="member: 28965"><p>If you do not mind sizing in two operations you can take any brand full length die and remove the expander and size your cases. They will be as concentric as they ever will be without using the dies expander. Next expand the case necks with an expander die on the upstroke of the ram with the expander pushing down on the base of the case.</p><p></p><p>I tried the above method vs using a standard Forster full length die and the neck runout was the same. Meaning sizing once with the Forster die produced the same results using the Forster dies expander.</p><p></p><p>Just remember to polish the expander and lube inside the case necks for low expander friction.</p><p></p><p>Below a closeup macro photo of a RCBS expander. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite9" alt=":eek:" title="Eek! :eek:" loading="lazy" data-shortname=":eek:" /></p><p></p><p><img src="https://i.imgur.com/5Rqdvuh.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>Below I modified a Forster expander and spindle assembly and installed it on my Redding FL .243 die. The threaded spindle was simply cut to the proper length and a rubber o-ring was added under the lock ring to allow it to float.</p><p></p><p><img src="https://i.imgur.com/kWbieba.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>You can also buy Forster expander assemblies and install them on your RCBS dies. Below on the left, the RCBS expander raised as high as it will move and on the right the replacement Forster assembly.</p><p></p><p><img src="https://i.imgur.com/5kfnKwd.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="bigedp51, post: 1807746, member: 28965"] If you do not mind sizing in two operations you can take any brand full length die and remove the expander and size your cases. They will be as concentric as they ever will be without using the dies expander. Next expand the case necks with an expander die on the upstroke of the ram with the expander pushing down on the base of the case. I tried the above method vs using a standard Forster full length die and the neck runout was the same. Meaning sizing once with the Forster die produced the same results using the Forster dies expander. Just remember to polish the expander and lube inside the case necks for low expander friction. Below a closeup macro photo of a RCBS expander. :eek: [IMG]https://i.imgur.com/5Rqdvuh.jpg[/IMG] Below I modified a Forster expander and spindle assembly and installed it on my Redding FL .243 die. The threaded spindle was simply cut to the proper length and a rubber o-ring was added under the lock ring to allow it to float. [img]https://i.imgur.com/kWbieba.jpg[/img] You can also buy Forster expander assemblies and install them on your RCBS dies. Below on the left, the RCBS expander raised as high as it will move and on the right the replacement Forster assembly. [img]https://i.imgur.com/5kfnKwd.jpg[/img] [/QUOTE]
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Reloading
Are the best presses for minimal run-out necessary?
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