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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Berger Bullets Tech Data List
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<blockquote data-quote="BryanLitz" data-source="post: 366821" data-attributes="member: 7848"><p>Rick,</p><p></p><p>The recommended twist rates are based on the slowest speeds the bullets are likely to be fired at. However, increasing muzzle velocity has less of an effect on stability than is commonly thought.</p><p></p><p>It's true that RPM's increase 1:1 with muzzle velocity, but stability does not. The reason is because the higher velocity bullet has more <em>overturning torque</em> applied to it's nose because it's flying faster (higher speed = higher drag and overturning torque[/i].</p><p></p><p>If you send me an email (bryan.litz@bergerbullets.com) I can send you a stability calculator. You can play around with muzzle velocity and the other variables to see how much they affect stability.</p><p></p><p>Take care,</p><p>-Bryan</p></blockquote><p></p>
[QUOTE="BryanLitz, post: 366821, member: 7848"] Rick, The recommended twist rates are based on the slowest speeds the bullets are likely to be fired at. However, increasing muzzle velocity has less of an effect on stability than is commonly thought. It's true that RPM's increase 1:1 with muzzle velocity, but stability does not. The reason is because the higher velocity bullet has more [i]overturning torque[/i] applied to it's nose because it's flying faster (higher speed = higher drag and overturning torque[/i]. If you send me an email (bryan.litz@bergerbullets.com) I can send you a stability calculator. You can play around with muzzle velocity and the other variables to see how much they affect stability. Take care, -Bryan [/QUOTE]
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