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Rifles, Reloading, Optics, Equipment
Reloading
Run-out help needed
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<blockquote data-quote="Mikecr" data-source="post: 737491" data-attributes="member: 1521"><p>FL dies size the entire length of necks(which is the very worst thing anyone could do). </p><p>Bushing dies do not.</p><p>More often than otherwise, actual off the shelf FL dies also way oversize the bodies.</p><p>What is merchandised as FL bushing dies are actually body-bushing dies.</p><p>Undersizing/oversizing here is a matter of chamber to die to load match.</p><p>I just think it's important to clarify this here, as a great deal of common problems relate.</p><p></p><p>Also, neck turning only addresses a portion of runout caused by thickness variance(temporarily).</p><p>That variance runs full length of cases, and as the bodies are sized & sprung back they warp due to the variance. This, alittle bit more & more with each sizing cycle. The greater the body sizing, especially with long skinny cases, the faster runout builds.</p><p></p><p>If you fireform brass a few times with no more than partial neck sizing between, and then check runout, you'll find <1thou TIR off unsized necks. ANY sizing done from there creates runout.</p><p>Well, you'll have to size a 30-06 & you won't make straight ammo with blind luck or generalizations about this.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 737491, member: 1521"] FL dies size the entire length of necks(which is the very worst thing anyone could do). Bushing dies do not. More often than otherwise, actual off the shelf FL dies also way oversize the bodies. What is merchandised as FL bushing dies are actually body-bushing dies. Undersizing/oversizing here is a matter of chamber to die to load match. I just think it's important to clarify this here, as a great deal of common problems relate. Also, neck turning only addresses a portion of runout caused by thickness variance(temporarily). That variance runs full length of cases, and as the bodies are sized & sprung back they warp due to the variance. This, alittle bit more & more with each sizing cycle. The greater the body sizing, especially with long skinny cases, the faster runout builds. If you fireform brass a few times with no more than partial neck sizing between, and then check runout, you'll find <1thou TIR off unsized necks. ANY sizing done from there creates runout. Well, you'll have to size a 30-06 & you won't make straight ammo with blind luck or generalizations about this. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Run-out help needed
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