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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
vibration node Q
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<blockquote data-quote="Mikecr" data-source="post: 30821" data-attributes="member: 1521"><p>Could it be that barrel bow causes the wave? Like a bourdon tube straightening w/pressure. And that, rifling(bullet twist acceleration/torque) simply induces rotation into a vertical motion, which is already traveling toward the muzzle? Pushed by the bullet.</p><p>I realize a component of the muzzle motion is circular. See it in ladder load testing.</p><p>I'm sure the barrel is trying to unwind as long as the bullet is accelerating against the twist. Probably lengthens the barrel a bit, for a moment.</p><p>But, Would a barrel w/zero twist have no vibration/nodes? </p><p>This is hardest for me to understand. Surely the vertical motion would remain. Perhaps after the bullet has left.</p><p></p><p>I mean, I don't know. Need a reason that other theories cannot be the cause, as well as support FOR a given cause.</p><p>If that make sense</p><p> <img src="http://images/icons/smile.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>[ 01-27-2004: Message edited by: Mikecr ]</p></blockquote><p></p>
[QUOTE="Mikecr, post: 30821, member: 1521"] Could it be that barrel bow causes the wave? Like a bourdon tube straightening w/pressure. And that, rifling(bullet twist acceleration/torque) simply induces rotation into a vertical motion, which is already traveling toward the muzzle? Pushed by the bullet. I realize a component of the muzzle motion is circular. See it in ladder load testing. I'm sure the barrel is trying to unwind as long as the bullet is accelerating against the twist. Probably lengthens the barrel a bit, for a moment. But, Would a barrel w/zero twist have no vibration/nodes? This is hardest for me to understand. Surely the vertical motion would remain. Perhaps after the bullet has left. I mean, I don't know. Need a reason that other theories cannot be the cause, as well as support FOR a given cause. If that make sense [img]images/icons/smile.gif[/img] [ 01-27-2004: Message edited by: Mikecr ] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
vibration node Q
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