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Rifles, Reloading, Optics, Equipment
Reloading
Concentricity .. how important?
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<blockquote data-quote="bigedp51" data-source="post: 1455952" data-attributes="member: 28965"><p>The reason so many reloaders use a body die and the Lee collet die is because it produces less neck runout than a bushing die. A bushing die works best with tight neck custom chamber and not reducing the neck diameter over .004.</p><p></p><p>I'm just not a fan of the Lee collet die and prefer using the Forster full length benchrest dies and seating dies. And if needed Forster will hone the dies neck to your desired diameter. Below the "6.5 Guys" are switching from bushing dies to honed Forster full length dies.</p><p></p><p><span style="font-size: 15px"><strong>Weekly Gear Update – Forster Honed Dies</strong></span></p><p><span style="font-size: 15px"><strong><a href="http://www.65guys.com/weekly-gear-update-forster-honed-dies/" target="_blank">http://www.65guys.com/weekly-gear-update-forster-honed-dies/</a></strong></span></p><p></p><p>[MEDIA=youtube]ac3iDJxDgxk[/MEDIA]</p><p></p><p>Bottom line, if you remove the expander from a full length die and size a case it will be as concentric as it ever will be. The problem is if the expander is not centered on the down stroke of the ram and if the neck is pulled off center. And the Forster high mounted floating expander can not pull your case necks off center and induce neck runout.</p><p></p><p>This is where having concentricity gauge comes in handy and finding out if the problem is the sizing die or seating die.</p><p></p><p> I prefer to sort my cases with the Redding neck thickness gauge, and one twist of the wrist will show the amount of neck thickness variations and the uniformity of the case.</p><p></p><p><img src="https://i.imgur.com/B0haSAX.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="bigedp51, post: 1455952, member: 28965"] The reason so many reloaders use a body die and the Lee collet die is because it produces less neck runout than a bushing die. A bushing die works best with tight neck custom chamber and not reducing the neck diameter over .004. I'm just not a fan of the Lee collet die and prefer using the Forster full length benchrest dies and seating dies. And if needed Forster will hone the dies neck to your desired diameter. Below the "6.5 Guys" are switching from bushing dies to honed Forster full length dies. [SIZE=4][B]Weekly Gear Update – Forster Honed Dies[/B] [B][URL]http://www.65guys.com/weekly-gear-update-forster-honed-dies/[/URL][/B][/SIZE] [MEDIA=youtube]ac3iDJxDgxk[/MEDIA] Bottom line, if you remove the expander from a full length die and size a case it will be as concentric as it ever will be. The problem is if the expander is not centered on the down stroke of the ram and if the neck is pulled off center. And the Forster high mounted floating expander can not pull your case necks off center and induce neck runout. This is where having concentricity gauge comes in handy and finding out if the problem is the sizing die or seating die. I prefer to sort my cases with the Redding neck thickness gauge, and one twist of the wrist will show the amount of neck thickness variations and the uniformity of the case. [IMG]https://i.imgur.com/B0haSAX.jpg[/IMG] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Concentricity .. how important?
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