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Rifles, Reloading, Optics, Equipment
Reloading
Question for those who neck size
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<blockquote data-quote="SBruce" data-source="post: 527196" data-attributes="member: 21068"><p>Yes, some neck size dies overwork the brass. They squeeze it down more than needed, and <u>then</u> expand it back to the necessary size with some sort of expander ball or "slug" as you say. Same thing that happens with most common FL size dies. This usually results in cases that are no longer very concentric. The more we work the brass, the fewer times we can fire it without annealing. Also, the more it gets worked the more likely it will be eccentric.</p><p> </p><p>A Bushing Style allows us to squeeze down the neck <u>only enough</u> to give the amount of tension on the bullet that we want. We can set that amount by changing the bushings to whatever size we need. </p><p> </p><p>By only squeezing down "just enough" for .002 neck tension (as an example)...........we work the brass far less each time it's loaded. In fact, with a tight neck or mimimun turn chamber and the proper neck thickness, in some cases we don't need to resize the case at all (fitted neck, but that's a different story). </p><p> </p><p>There are also FL dies that utilize bushings in the neck and they work the brass as little as necessary too.</p><p> </p><p>Redding, Wilson, Forster, Neil Jones and some other custom die builders are the ones I know of. There may even be others that I haven't heard of. Hornady now even offers them in their "Match Grade" line, but not in every caliber. Ask for Bushing Neck Dies, or Bushing FL Dies.</p></blockquote><p></p>
[QUOTE="SBruce, post: 527196, member: 21068"] Yes, some neck size dies overwork the brass. They squeeze it down more than needed, and [U]then[/U] expand it back to the necessary size with some sort of expander ball or "slug" as you say. Same thing that happens with most common FL size dies. This usually results in cases that are no longer very concentric. The more we work the brass, the fewer times we can fire it without annealing. Also, the more it gets worked the more likely it will be eccentric. A Bushing Style allows us to squeeze down the neck [U]only enough[/U] to give the amount of tension on the bullet that we want. We can set that amount by changing the bushings to whatever size we need. By only squeezing down "just enough" for .002 neck tension (as an example)...........we work the brass far less each time it's loaded. In fact, with a tight neck or mimimun turn chamber and the proper neck thickness, in some cases we don't need to resize the case at all (fitted neck, but that's a different story). There are also FL dies that utilize bushings in the neck and they work the brass as little as necessary too. Redding, Wilson, Forster, Neil Jones and some other custom die builders are the ones I know of. There may even be others that I haven't heard of. Hornady now even offers them in their "Match Grade" line, but not in every caliber. Ask for Bushing Neck Dies, or Bushing FL Dies. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Question for those who neck size
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