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Rifles, Reloading, Optics, Equipment
Reloading
Do I need to neck turn?
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<blockquote data-quote="Mikecr" data-source="post: 820502" data-attributes="member: 1521"><p>It's not a physics issue, or even a conceptual issue. It's your bias towards an incorrect notion combined with contempt for evidence within your reach.</p><p>I should say about this "One test equals a thousand expert opinions", and I have provided a test earlier for which I know the results.</p><p></p><p></p><p>Atleast consider that a bullet stays in place BECAUSE it is gripped by a neck, and only for a **** short period of time. There is timing to it, to pressure rise per area, much like a WOODEN stick jammed into a muzzle can lead to a STEEL barrel blowing up(which I'm sure was denied until laughably undeniable). One test...</p><p></p><p>While pressure is applied to the back of bullets, it is also applied to a much larger case area. The case is expanding first, way ahead of any bullet forced out of a gripping neck theory. Not much at first, but it don't take much. The case expands moreso where it is thinner than thicker, peeling it open nearer the bullet than webs, and eventually the case chamber seals first at necks, then shoulder body, and last near webs. When there is so little resistance in bullet grip that pressure applied to bullet base area overcomes static inertia, the bullet moves. </p><p></p><p>You could keep a neck from expanding by fitting it to this condition, aka bearing into a donut, or just zero neck clearance, and yes, the bullet will eventually overcome normal friction and move. This, provided the gun doesn't come apart, and believe me this will affect pressure beyond the notions you're considering as 'normal'. Put another way, if our loads relied on overcoming normal bullet/neck interference friction(normal seating forces) for bullet release, nothing in reloading, or modern gun build, would be as it is today. </p><p></p><p>Bottom line: polished necks with higher seating forces shoot exactly the same as fouled necks with way lower seating forces. One test..</p></blockquote><p></p>
[QUOTE="Mikecr, post: 820502, member: 1521"] It's not a physics issue, or even a conceptual issue. It's your bias towards an incorrect notion combined with contempt for evidence within your reach. I should say about this "One test equals a thousand expert opinions", and I have provided a test earlier for which I know the results. Atleast consider that a bullet stays in place BECAUSE it is gripped by a neck, and only for a **** short period of time. There is timing to it, to pressure rise per area, much like a WOODEN stick jammed into a muzzle can lead to a STEEL barrel blowing up(which I'm sure was denied until laughably undeniable). One test... While pressure is applied to the back of bullets, it is also applied to a much larger case area. The case is expanding first, way ahead of any bullet forced out of a gripping neck theory. Not much at first, but it don't take much. The case expands moreso where it is thinner than thicker, peeling it open nearer the bullet than webs, and eventually the case chamber seals first at necks, then shoulder body, and last near webs. When there is so little resistance in bullet grip that pressure applied to bullet base area overcomes static inertia, the bullet moves. You could keep a neck from expanding by fitting it to this condition, aka bearing into a donut, or just zero neck clearance, and yes, the bullet will eventually overcome normal friction and move. This, provided the gun doesn't come apart, and believe me this will affect pressure beyond the notions you're considering as 'normal'. Put another way, if our loads relied on overcoming normal bullet/neck interference friction(normal seating forces) for bullet release, nothing in reloading, or modern gun build, would be as it is today. Bottom line: polished necks with higher seating forces shoot exactly the same as fouled necks with way lower seating forces. One test.. [/QUOTE]
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Reloading
Do I need to neck turn?
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