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Rifles, Reloading, Optics, Equipment
Reloading
Neck Turning
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<blockquote data-quote="Mikecr" data-source="post: 2159856" data-attributes="member: 1521"><p>What Sinclair offers is a turning mandrel and an expander mandrel. This is part of their turning system.</p><p>The turning mandrel is smaller than the expander mandrel.</p><p></p><p>Mandrels are not actually for setting tension. Your bushing sizing does that (with LENGTH of neck sizing).</p><p>I guess I could keep saying it until the world ends, but here we go again:</p><p>INTERFERENCE FIT is not TENSION. Various mandrel sizes set interference fit, not tension.</p><p>Your seating bullets simply undo whatever interference fit you set.</p><p></p><p>Neck tension is spring back force gripping an area of seated bullet bearing (PSI).</p><p>Spring back force is affected by several things, but you can adjust the area with which it applies, through seating depth and adjusted sizing length.</p><p>Your powder tuning is accounting for this, and it's the finest of all tuning (to the kernel). So you might as well just choose a reasonable interference and sizing length, that holds variance and detriment to minimal.</p><p>Extremes are never reasonable</p></blockquote><p></p>
[QUOTE="Mikecr, post: 2159856, member: 1521"] What Sinclair offers is a turning mandrel and an expander mandrel. This is part of their turning system. The turning mandrel is smaller than the expander mandrel. Mandrels are not actually for setting tension. Your bushing sizing does that (with LENGTH of neck sizing). I guess I could keep saying it until the world ends, but here we go again: INTERFERENCE FIT is not TENSION. Various mandrel sizes set interference fit, not tension. Your seating bullets simply undo whatever interference fit you set. Neck tension is spring back force gripping an area of seated bullet bearing (PSI). Spring back force is affected by several things, but you can adjust the area with which it applies, through seating depth and adjusted sizing length. Your powder tuning is accounting for this, and it's the finest of all tuning (to the kernel). So you might as well just choose a reasonable interference and sizing length, that holds variance and detriment to minimal. Extremes are never reasonable [/QUOTE]
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