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Rifles, Reloading, Optics, Equipment
Reloading
Redding S type bushing die runout and solution
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<blockquote data-quote="bigedp51" data-source="post: 1301948" data-attributes="member: 28965"><p>Redding puts a expander in their bushing dies for the people who do not turn their case necks.</p><p>What sense does it make to push the neck irregularities and uneven neck wall thicknesses to the inside of the case neck.</p><p></p><p>With a Forster full length benchrest die with its high mounted floating expander I get .001 or less case neck runout.</p><p></p><p>A expander is not the end of the world and Whidden custom dies sells expander kits with five expanders from bullet diameter to .004 under bullet diameter.</p><p></p><p>Whidden also tells you they get the most concentric cases with <strong>non-bushing</strong> full length dies. And what many people fail to realize is the bushing dies work best with tight neck chambers with neck turned brass.</p><p></p><p>On top of this if you reduce the neck diameter .004 or more with a bushing die you will induce neck runout. And this is why it is recommended if reducing the neck diameter .004 or more to do it in 2 sizing steps. </p><p></p><p>Below is one of my Redding dies equipped with a Forster high mounted floating expander and spindle assembly. This setup greatly reduces neck runout and I'm not dragging a much longer Redding expander through the case neck.</p><p></p><p><img src="http://i.imgur.com/kWbieba.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>I bought seven different make and type .223 dies to test runout. I get the least neck runout with a Forster full length benchrest non-bushing die and the most neck runout with bushing dies. This is because with a standard SAAMI chamber the case neck expands more than .004 and the floating bushing can move from side to side and even tilt when sizing the case neck.</p><p></p><p> <strong><span style="font-size: 10px">FL Bushing Dies vs. Honed FL Dies</span></strong></p><p><strong><span style="font-size: 10px"><u><u><a href="http://www.accurateshooter.com/technical-articles/reloading/fl-bushing-dies-vs-honed-fl-dies/" target="_blank">http://www.accurateshooter.com/technical-articles/reloading/fl-bushing-dies-vs-honed-fl-dies/</a></u></u></span></strong></p><p><strong><span style="font-size: 10px"></span></strong></p><p><strong><span style="font-size: 10px"></span></strong> Bottom line, too much of what benchrest shooters do filters down to the average shooter and it is not needed. And how did we get by all those years before bushing dies, neck turning and still hit what we were aiming at.</p></blockquote><p></p>
[QUOTE="bigedp51, post: 1301948, member: 28965"] Redding puts a expander in their bushing dies for the people who do not turn their case necks. What sense does it make to push the neck irregularities and uneven neck wall thicknesses to the inside of the case neck. With a Forster full length benchrest die with its high mounted floating expander I get .001 or less case neck runout. A expander is not the end of the world and Whidden custom dies sells expander kits with five expanders from bullet diameter to .004 under bullet diameter. Whidden also tells you they get the most concentric cases with [B]non-bushing[/B] full length dies. And what many people fail to realize is the bushing dies work best with tight neck chambers with neck turned brass. On top of this if you reduce the neck diameter .004 or more with a bushing die you will induce neck runout. And this is why it is recommended if reducing the neck diameter .004 or more to do it in 2 sizing steps. Below is one of my Redding dies equipped with a Forster high mounted floating expander and spindle assembly. This setup greatly reduces neck runout and I'm not dragging a much longer Redding expander through the case neck. [IMG]http://i.imgur.com/kWbieba.jpg[/IMG] I bought seven different make and type .223 dies to test runout. I get the least neck runout with a Forster full length benchrest non-bushing die and the most neck runout with bushing dies. This is because with a standard SAAMI chamber the case neck expands more than .004 and the floating bushing can move from side to side and even tilt when sizing the case neck. [B][SIZE=2]FL Bushing Dies vs. Honed FL Dies [U][U][URL]http://www.accurateshooter.com/technical-articles/reloading/fl-bushing-dies-vs-honed-fl-dies/[/URL][/U][/U] [/SIZE][/B] Bottom line, too much of what benchrest shooters do filters down to the average shooter and it is not needed. And how did we get by all those years before bushing dies, neck turning and still hit what we were aiming at. [/QUOTE]
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Redding S type bushing die runout and solution
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