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Rifles, Reloading, Optics, Equipment
Reloading
243 AI neck diameter question.
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<blockquote data-quote="Mikecr" data-source="post: 1205170" data-attributes="member: 1521"><p>I'm trying to understand why you think there is a problem. Your clearance and sizing is good.</p><p>Is it because bullets pass through an expanded neck?</p><p></p><p>If this is the case, remember that a bullet is fully released even at 1 trillionth (0.000000000001) over bullet diameter. So with a loaded neck OD of .272, the bullet would fall out with that same neck expanded to .272000000001".</p><p>Does it take much pressure to do this? No, very little, way less than needed to obturate bullets. </p><p>This release pressure is effective neck tension, which is adjustable.</p><p>It also means that ANY neck clearance, any at all, is sufficient to release bullets. I have tested this from .001 to .000001 clearance(best I could tell), and while POI changed, velocity did not. </p><p>This was a highly controlled experiment -do not try it otherwise.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 1205170, member: 1521"] I'm trying to understand why you think there is a problem. Your clearance and sizing is good. Is it because bullets pass through an expanded neck? If this is the case, remember that a bullet is fully released even at 1 trillionth (0.000000000001) over bullet diameter. So with a loaded neck OD of .272, the bullet would fall out with that same neck expanded to .272000000001". Does it take much pressure to do this? No, very little, way less than needed to obturate bullets. This release pressure is effective neck tension, which is adjustable. It also means that ANY neck clearance, any at all, is sufficient to release bullets. I have tested this from .001 to .000001 clearance(best I could tell), and while POI changed, velocity did not. This was a highly controlled experiment -do not try it otherwise. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
243 AI neck diameter question.
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