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Rifles, Reloading, Optics, Equipment
Reloading
Run-out help needed
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<blockquote data-quote="Bullet bumper" data-source="post: 735684" data-attributes="member: 17844"><p>If you are chasing tiny groups then you need to use match quality bullets to start with.</p><p>Then buy a Redding competition seating die .</p><p>If your fired case has a .002 run out and it ends up .009 bullet run out then you and or the dies are not good. </p><p>To get good run out you have to start right at the beginning.</p><p>First anneal all the case necks. This gives consistent hardness radially around the neck and will last about 7 shots . </p><p>Then size the case neck with a Lee collet die . Freshly Annealed necks may drag a bit in the collet die so use dry lube inside the necks for two reloads then no lube is required . If you use an old expander ball type die it will bend the case necks as the ball comes out. Gets worse as the neck hardens.</p><p>Test the fired cases then anneal and neck size then test them again if the run out is still good your sizing is working. </p><p>Then chamfer the case necks paying particular attention to evenness and straightness of the chamfer edge on the inside . Don't over chamfer .</p><p>Do all the other loading steps then when you start bullet seating start the bullet a small amount first then back off and rotate the round about 90 degrees and seat a bit more then another 90 degrees and seat all the way home gently . </p><p>When testing run out don't put the dial gauge tip on the ogive of the bullet come back to the parallel part or at least closer to the case neck .</p></blockquote><p></p>
[QUOTE="Bullet bumper, post: 735684, member: 17844"] If you are chasing tiny groups then you need to use match quality bullets to start with. Then buy a Redding competition seating die . If your fired case has a .002 run out and it ends up .009 bullet run out then you and or the dies are not good. To get good run out you have to start right at the beginning. First anneal all the case necks. This gives consistent hardness radially around the neck and will last about 7 shots . Then size the case neck with a Lee collet die . Freshly Annealed necks may drag a bit in the collet die so use dry lube inside the necks for two reloads then no lube is required . If you use an old expander ball type die it will bend the case necks as the ball comes out. Gets worse as the neck hardens. Test the fired cases then anneal and neck size then test them again if the run out is still good your sizing is working. Then chamfer the case necks paying particular attention to evenness and straightness of the chamfer edge on the inside . Don't over chamfer . Do all the other loading steps then when you start bullet seating start the bullet a small amount first then back off and rotate the round about 90 degrees and seat a bit more then another 90 degrees and seat all the way home gently . When testing run out don't put the dial gauge tip on the ogive of the bullet come back to the parallel part or at least closer to the case neck . [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Run-out help needed
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