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Rifles, Reloading, Optics, Equipment
Reloading
Presses and runout
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<blockquote data-quote="bigedp51" data-source="post: 1569477" data-attributes="member: 28965"><p>I use Lee lock rings on my dies that allow the die to float and self center in the press threads.</p><p>I use Forster full length dies with their high mounted floating expander that greatly reduces case neck runout.</p><p>And I still use the Rockchucker press I bought in 1973 using Redding competition shell holders.</p><p>A full length die with the expander removed will make the case as concentric as it ever will be.</p><p>And a off center expander and neck thickness variations are the biggest cause of neck runout.</p><p></p><p>In another forum a poster reducing his neck diameter .011 with a bushing die is wondering why his neck runout is so high. In the Redding bushing die FAQ they tell you if you reduce the neck diameter .004 or more the bushing will induce neck runout. In the same FAQ they tell you to reduce the neck diameter in several steps to reduce the neck runout. They also tell you if the cases have .002 or more neck thickness variations to use the expander included with the Redding bushing die. At the Whidden website they tell you they get more concentric cases using non-bushing full length dies. </p><p></p><p>[MEDIA=youtube]ac3iDJxDgxk[/MEDIA]</p></blockquote><p></p>
[QUOTE="bigedp51, post: 1569477, member: 28965"] I use Lee lock rings on my dies that allow the die to float and self center in the press threads. I use Forster full length dies with their high mounted floating expander that greatly reduces case neck runout. And I still use the Rockchucker press I bought in 1973 using Redding competition shell holders. A full length die with the expander removed will make the case as concentric as it ever will be. And a off center expander and neck thickness variations are the biggest cause of neck runout. In another forum a poster reducing his neck diameter .011 with a bushing die is wondering why his neck runout is so high. In the Redding bushing die FAQ they tell you if you reduce the neck diameter .004 or more the bushing will induce neck runout. In the same FAQ they tell you to reduce the neck diameter in several steps to reduce the neck runout. They also tell you if the cases have .002 or more neck thickness variations to use the expander included with the Redding bushing die. At the Whidden website they tell you they get more concentric cases using non-bushing full length dies. [MEDIA=youtube]ac3iDJxDgxk[/MEDIA] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Presses and runout
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