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Rifles, Reloading, Optics, Equipment
Reloading
Bushing Dies How To?
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<blockquote data-quote="bigedp51" data-source="post: 1705221" data-attributes="member: 28965"><p>Bushing dies work best with custom tight neck chambers and neck turned brass.</p><p></p><p>In a standard off the shelf factory rifle with a SAAMI chamber a bushing die will induce neck runout when the neck is reduced .004 or more in diameter. And the Redding bushing FAQ tells you to reduce the neck diameter in two steps to help reduce the amount of case neck runout. And the problem is the majority of standard SAAMI chambers let the neck expand far more than .004. And if you neck turn the cases it lets the neck expand that much more.</p><p></p><p>The Redding FAQ also tells you if the neck thickness varies .002 or more then use the expander that comes with the die. It also tells you to reduce the neck diameter .004 more than the neck diameter of a cartridge with a seated bullet and use the expander to push the variations to the outside of the case neck. So even with a bushing die and a off the shelf factory rifle you still can end up working the brass a great deal.</p><p></p><p>And the above reasons are why so many shooters use a Lee collet die in conjunction with a body die. Meaning the Lee collet die will work the neck "less" than a bushing die and produce cases with less neck runout.</p><p></p><p>Now watch the video below and see that a Forster full length die produces cases with less neck runout than a bushing die. And remember that at the Whidden custom die website they tell you they get the most concentric cases with non-bushing full length dies. </p><p></p><p>[MEDIA=youtube]ac3iDJxDgxk[/MEDIA]</p></blockquote><p></p>
[QUOTE="bigedp51, post: 1705221, member: 28965"] Bushing dies work best with custom tight neck chambers and neck turned brass. In a standard off the shelf factory rifle with a SAAMI chamber a bushing die will induce neck runout when the neck is reduced .004 or more in diameter. And the Redding bushing FAQ tells you to reduce the neck diameter in two steps to help reduce the amount of case neck runout. And the problem is the majority of standard SAAMI chambers let the neck expand far more than .004. And if you neck turn the cases it lets the neck expand that much more. The Redding FAQ also tells you if the neck thickness varies .002 or more then use the expander that comes with the die. It also tells you to reduce the neck diameter .004 more than the neck diameter of a cartridge with a seated bullet and use the expander to push the variations to the outside of the case neck. So even with a bushing die and a off the shelf factory rifle you still can end up working the brass a great deal. And the above reasons are why so many shooters use a Lee collet die in conjunction with a body die. Meaning the Lee collet die will work the neck "less" than a bushing die and produce cases with less neck runout. Now watch the video below and see that a Forster full length die produces cases with less neck runout than a bushing die. And remember that at the Whidden custom die website they tell you they get the most concentric cases with non-bushing full length dies. [MEDIA=youtube]ac3iDJxDgxk[/MEDIA] [/QUOTE]
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Bushing Dies How To?
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