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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
.257 eldx length ?
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<blockquote data-quote="b1dude" data-source="post: 2734977" data-attributes="member: 60883"><p>Alan Griffith...reviving an old discussion here.... as I revisit old threads. Question for you regarding your 257 Roberts experience. What twist does your pre-64 .257 Rob have?</p><p>Background:</p><p>I have my own .257 reloading experiment going on and I'm getting indications barrel twist required to stabilize these .257 ELD-X bullets requires quite a bit more twist than what Hornady puts on the box (e.g. 1:10). Using the Berger twist/stability calculator (<a href="https://bergerbullets.com/twist-rate-calculator/" target="_blank">https://bergerbullets.com/twist-rate-calculator/</a>) even a 1:9 is marginally stable. The Berger calculator requires at least a 8.5 twist (vs the 1:10 on the box) to even come close to marginal stability. Curious what experiences are out there regarding Hornady's twist rate requirements on the box vs real life experience. Seems Berger and my anecdotal experience would disagree with big H.</p></blockquote><p></p>
[QUOTE="b1dude, post: 2734977, member: 60883"] Alan Griffith...reviving an old discussion here.... as I revisit old threads. Question for you regarding your 257 Roberts experience. What twist does your pre-64 .257 Rob have? Background: I have my own .257 reloading experiment going on and I'm getting indications barrel twist required to stabilize these .257 ELD-X bullets requires quite a bit more twist than what Hornady puts on the box (e.g. 1:10). Using the Berger twist/stability calculator ([URL]https://bergerbullets.com/twist-rate-calculator/[/URL]) even a 1:9 is marginally stable. The Berger calculator requires at least a 8.5 twist (vs the 1:10 on the box) to even come close to marginal stability. Curious what experiences are out there regarding Hornady's twist rate requirements on the box vs real life experience. Seems Berger and my anecdotal experience would disagree with big H. [/QUOTE]
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.257 eldx length ?
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