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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Berger Twist Rate Stability Calculator (need help)
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<blockquote data-quote="Tiny Tim" data-source="post: 2024548" data-attributes="member: 87887"><p>I believe you are referring to SG of 1.9. Mikecr gives a good explanation of what can happen if a bullet is "over spun". This "over-stabilization" CAN adversely affect precision, but terminal performance may also suffer. As others have pointed out, if a bullet spins too fast it may come apart in flight. If it just barely stays together in flight and impacts an animal, it may come apart on contact, leaving a surface wound with little penetration. So in the end, keeping the SG in that 1.4-1.9 range assures proper terminal performance. Again, there are many factors at work in all of this but they are good general guidelines.</p></blockquote><p></p>
[QUOTE="Tiny Tim, post: 2024548, member: 87887"] I believe you are referring to SG of 1.9. Mikecr gives a good explanation of what can happen if a bullet is "over spun". This "over-stabilization" CAN adversely affect precision, but terminal performance may also suffer. As others have pointed out, if a bullet spins too fast it may come apart in flight. If it just barely stays together in flight and impacts an animal, it may come apart on contact, leaving a surface wound with little penetration. So in the end, keeping the SG in that 1.4-1.9 range assures proper terminal performance. Again, there are many factors at work in all of this but they are good general guidelines. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Berger Twist Rate Stability Calculator (need help)
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