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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Bullet stability
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<blockquote data-quote="MajorSpittle" data-source="post: 1952550" data-attributes="member: 53101"><p>Yes, and that is how I read the calculator because there is no way to know what the SD value will be for my gun with a particular bullet and it changes with how that bullet is loaded.</p><p></p><p>It is good to know that you can actually measure the off axis spin when testing to come up with the calculations for the application.</p><p></p><p>I assume that since you can do this you would have some great insight into what can be done minimize instability or what rifle/barrel manufactures are creating products that show better stability at lower twist rates? Perhaps with regards to the design of the throats, rifling, actions, crowning, manufacturing process, bedding design...... or if instability can be helped when developing a load by lessening muzzle blast, neck sizing, touching the lands or using a particular muzzle break design?</p></blockquote><p></p>
[QUOTE="MajorSpittle, post: 1952550, member: 53101"] Yes, and that is how I read the calculator because there is no way to know what the SD value will be for my gun with a particular bullet and it changes with how that bullet is loaded. It is good to know that you can actually measure the off axis spin when testing to come up with the calculations for the application. I assume that since you can do this you would have some great insight into what can be done minimize instability or what rifle/barrel manufactures are creating products that show better stability at lower twist rates? Perhaps with regards to the design of the throats, rifling, actions, crowning, manufacturing process, bedding design...... or if instability can be helped when developing a load by lessening muzzle blast, neck sizing, touching the lands or using a particular muzzle break design? [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Bullet stability
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