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Rifles, Reloading, Optics, Equipment
Reloading
neck tension on a 7mm Allen
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<blockquote data-quote="Mikecr" data-source="post: 449171" data-attributes="member: 1521"><p>To begin, seating force and springback are different and seperate things.</p><p>If it springs back less on down sizing, it will springback less on upsizing as well, causing less grip on the bullet, even if harder to seat(single pass upsize).</p><p></p><p>If the sizing was sufficient and similar in both cases(the bullet is still upsizing with seating), the case which sprungback more will provide greater bullet grip(tension). It is springing back from seating -to cause grip.</p><p></p><p>The case with no springback MIGHT cause more seating force with greater required upsizing on seating(probably not). But it will also provide LESS springback to grip the bullet once seated, because it's softer.</p><p></p><p>I know, we describe bullet grip as tension, which is described as an interference fit.. </p><p>This is just another of many assumptions we make, that are wrong.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 449171, member: 1521"] To begin, seating force and springback are different and seperate things. If it springs back less on down sizing, it will springback less on upsizing as well, causing less grip on the bullet, even if harder to seat(single pass upsize). If the sizing was sufficient and similar in both cases(the bullet is still upsizing with seating), the case which sprungback more will provide greater bullet grip(tension). It is springing back from seating -to cause grip. The case with no springback MIGHT cause more seating force with greater required upsizing on seating(probably not). But it will also provide LESS springback to grip the bullet once seated, because it's softer. I know, we describe bullet grip as tension, which is described as an interference fit.. This is just another of many assumptions we make, that are wrong. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
neck tension on a 7mm Allen
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