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Rifles, Reloading, Optics, Equipment
Reloading
Neck tension and max bullet grip force
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<blockquote data-quote="ScottB338" data-source="post: 2133724" data-attributes="member: 113037"><p>Does anyone know how much spring back tension is possible with any given neck diameter and/or case wall thickness for holding a bullet? Brass will stretch at a certain point and no longer provide an increase in the spring back force that would increase bullet tension.</p><p>At some point, I would think, further reducing the ID of the case neck will no longer produce increases in bullet grip force.</p><p></p><p>If, say, for example, has it been determined that a neck ID that is .005" undersize diameter of a</p><p>bullet, can only provide .002" of actual neck grip because part of that additional diameter reduction is lost to the brass yielding beyond spring back when the bullet is seated?</p><p></p><p>In this example, is the neck being tighter than .005" (or some other amount) under bullet diameter, just overworking the brass when the bullet is seated with no increase in bullet grip force due to the fact that the brass is pushed past its yield point?</p><p></p><p>Just wondering if anyone knows where the point of no return is.</p></blockquote><p></p>
[QUOTE="ScottB338, post: 2133724, member: 113037"] Does anyone know how much spring back tension is possible with any given neck diameter and/or case wall thickness for holding a bullet? Brass will stretch at a certain point and no longer provide an increase in the spring back force that would increase bullet tension. At some point, I would think, further reducing the ID of the case neck will no longer produce increases in bullet grip force. If, say, for example, has it been determined that a neck ID that is .005” undersize diameter of a bullet, can only provide .002” of actual neck grip because part of that additional diameter reduction is lost to the brass yielding beyond spring back when the bullet is seated? In this example, is the neck being tighter than .005” (or some other amount) under bullet diameter, just overworking the brass when the bullet is seated with no increase in bullet grip force due to the fact that the brass is pushed past its yield point? Just wondering if anyone knows where the point of no return is. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Neck tension and max bullet grip force
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