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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Twist vs Bullet Weight Question
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<blockquote data-quote="Coyote Shadow Tracker" data-source="post: 2937995" data-attributes="member: 116439"><p>Has to do with the "Twist and RPM" of the bullet for it to stabilize and also hold together. Going too slow won't get correct stabilization. Going to fast can over stabilize and pull the bullet apart. There are articles posted from bullet manufactures with "Twist Rate Calculators".</p><p></p><p>EDIT:</p><p>There are other factors involved besides Twist, Weight. The twist will give you spin rate usually in RPM. But with the weight if the bullets can effect the Length of the bullet that can effect the Sectional Density, Bearing Surface also using BC G1/G7, ogive of the bullet</p><p>Bullets the same caliber don't always follow the same rule for weight and length. You can have two.357s one is short and stubby, and the other is long and skinny from the ogive out. Goes the same way with different calibers. you can have a small weight caliber Either long or heavy</p><p>and a heavy diameter with less with weight and short length, Then there is wind heat humidity</p><p></p><p>The easiest way is to use a Ballistic calculator,</p><p> </p><p>[URL unfurl="true"]https://bergerbullets.com/twist-rate-calculator/[/URL]</p></blockquote><p></p>
[QUOTE="Coyote Shadow Tracker, post: 2937995, member: 116439"] Has to do with the "Twist and RPM" of the bullet for it to stabilize and also hold together. Going too slow won't get correct stabilization. Going to fast can over stabilize and pull the bullet apart. There are articles posted from bullet manufactures with "Twist Rate Calculators". EDIT: There are other factors involved besides Twist, Weight. The twist will give you spin rate usually in RPM. But with the weight if the bullets can effect the Length of the bullet that can effect the Sectional Density, Bearing Surface also using BC G1/G7, ogive of the bullet Bullets the same caliber don't always follow the same rule for weight and length. You can have two.357s one is short and stubby, and the other is long and skinny from the ogive out. Goes the same way with different calibers. you can have a small weight caliber Either long or heavy and a heavy diameter with less with weight and short length, Then there is wind heat humidity The easiest way is to use a Ballistic calculator, [URL unfurl="true"]https://bergerbullets.com/twist-rate-calculator/[/URL] [/QUOTE]
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Twist vs Bullet Weight Question
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