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Rifles, Reloading, Optics, Equipment
Reloading
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<blockquote data-quote="bigedp51" data-source="post: 1369641" data-attributes="member: 28965"><p>If you remove the expander from a full length die the resized case will be as straight and concentric as it ever will be. The problem with the average expander is it can be locked down off center and induce neck runout. With the Forster full length die the high mounted expander floats and enters the case neck while it is held and centered in the neck of the die.</p><p></p><p>The problem with standard neck sizing dies is the case body is not fully supporting the case body and can cause neck runout. And when you add a bushing to a neck sizing die the bushing can move from side to side and even tilt.</p><p></p><p>So a full length resized case is more concentric with the least amount of neck runout. And you can use a Forster die, or any FL die and use a expander die, or a body die with a Lee collet die.</p><p></p><p>Bottom line, with the Forster full length benchrest die you only size the case once with the same or less neck runout as the other methods above.</p><p></p><p>Also Forster is the only die manufacture that will hone the neck of their dies to your desired diameter.</p><p></p><p>The problem I have with neck sizing dies and bushing dies is I get more neck runout with them than with the Forster full length dies.</p><p></p><p>Below are a Forster full length die and their benchrest seating die that greatly reduce neck and bullet runout.</p><p></p><p><img src="https://i.imgur.com/Y7Iyv8o.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p><img src="https://i.imgur.com/MomXeUI.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>Below the Forster and Redding benchrest seating dies have the ability to even correct neck runout.</p><p></p><p>Reloading: Seating Die Runout </p><p>Seating Die Induced Runout </p><p>A Comparison by Germán A. Salazar</p><p></p><p><a href="https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0ahUKEwi-7MTknfvXAhUM84MKHRCCBNcQFggnMAA&url=http%3A%2F%2Fwww.uniquetek.com%2Fstore%2F696296%2Fuploaded%2FReloading-Seating-Die-Runout.pdf&usg=AOvVaw0PTrUzbIFGXpTquMkz6CtT" target="_blank">https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0ahUKEwi-7MTknfvXAhUM84MKHRCCBNcQFggnMAA&url=http://www.uniquetek.com/store/696296/uploaded/Reloading-Seating-Die-Runout.pdf&usg=AOvVaw0PTrUzbIFGXpTquMkz6CtT</a></p></blockquote><p></p>
[QUOTE="bigedp51, post: 1369641, member: 28965"] If you remove the expander from a full length die the resized case will be as straight and concentric as it ever will be. The problem with the average expander is it can be locked down off center and induce neck runout. With the Forster full length die the high mounted expander floats and enters the case neck while it is held and centered in the neck of the die. The problem with standard neck sizing dies is the case body is not fully supporting the case body and can cause neck runout. And when you add a bushing to a neck sizing die the bushing can move from side to side and even tilt. So a full length resized case is more concentric with the least amount of neck runout. And you can use a Forster die, or any FL die and use a expander die, or a body die with a Lee collet die. Bottom line, with the Forster full length benchrest die you only size the case once with the same or less neck runout as the other methods above. Also Forster is the only die manufacture that will hone the neck of their dies to your desired diameter. The problem I have with neck sizing dies and bushing dies is I get more neck runout with them than with the Forster full length dies. Below are a Forster full length die and their benchrest seating die that greatly reduce neck and bullet runout. [IMG]https://i.imgur.com/Y7Iyv8o.jpg[/IMG] [IMG]https://i.imgur.com/MomXeUI.gif[/IMG] Below the Forster and Redding benchrest seating dies have the ability to even correct neck runout. Reloading: Seating Die Runout Seating Die Induced Runout A Comparison by Germán A. Salazar [URL='https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0ahUKEwi-7MTknfvXAhUM84MKHRCCBNcQFggnMAA&url=http%3A%2F%2Fwww.uniquetek.com%2Fstore%2F696296%2Fuploaded%2FReloading-Seating-Die-Runout.pdf&usg=AOvVaw0PTrUzbIFGXpTquMkz6CtT']https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0ahUKEwi-7MTknfvXAhUM84MKHRCCBNcQFggnMAA&url=http://www.uniquetek.com/store/696296/uploaded/Reloading-Seating-Die-Runout.pdf&usg=AOvVaw0PTrUzbIFGXpTquMkz6CtT[/URL] [/QUOTE]
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