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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Barrel Help
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<blockquote data-quote="Wachsmann" data-source="post: 1234379" data-attributes="member: 10429"><p><a href="http://www.bergerbullets.com/twist-rate-calculator/" target="_blank">Twist Rate Stability Calculator | Berger Bullets</a></p><p> </p><p>Try the link above to help answer the question. From what I understand the longer heavy for caliber bullets will need a faster twist rate than the lighter bullets. But for most factory guns the manfactures uses a twist rate that is good for a range of bullets. I'm pretty sure your 257 has a 1:10 twist rate on it which probably works ok. Now is some bullet makers comes out with a heavy 130 grn bullet for the 257 which would be great<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite11" alt=":rolleyes:" title="Roll Eyes :rolleyes:" loading="lazy" data-shortname=":rolleyes:" /> then the gun might need something like a 1:8. So after doing the calculations myself the 115 would work better with a 1:9 twist rate.</p></blockquote><p></p>
[QUOTE="Wachsmann, post: 1234379, member: 10429"] [url=http://www.bergerbullets.com/twist-rate-calculator/]Twist Rate Stability Calculator | Berger Bullets[/url] Try the link above to help answer the question. From what I understand the longer heavy for caliber bullets will need a faster twist rate than the lighter bullets. But for most factory guns the manfactures uses a twist rate that is good for a range of bullets. I'm pretty sure your 257 has a 1:10 twist rate on it which probably works ok. Now is some bullet makers comes out with a heavy 130 grn bullet for the 257 which would be great:rolleyes: then the gun might need something like a 1:8. So after doing the calculations myself the 115 would work better with a 1:9 twist rate. [/QUOTE]
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