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Rifles, Reloading, Optics, Equipment
Reloading
What am I doing wrong??
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<blockquote data-quote="LRHWAL" data-source="post: 217610" data-attributes="member: 5418"><p>I'm watching this with interest too. I have also just picked up a concentricity gauge.</p><p></p><p>I've got a similar story - unsolved as yet. </p><p></p><p>I will send a query to Redding Tech direct, but I see that Redding does point out that neck sizing thin brass fired in a factory (max SAAMI?) chamber results in too much sizing and out of kilter necks. (My question here of course is why this isn't a huge problem when necking down .308 Win to 6.5-08 / .260 Rem? Hmmm.....)</p><p></p><p>I do "float" the die and shellholder with O-rings.</p><p></p><p>Mine go from fired at 0.0005-0.001" to a sized anywhere from 0.004-0.010"! That said, my Win brass is pretty thin. The cases are sorted for max neck wall variance at 0.001 to 0.0015". </p><p></p><p>One solution I've seen suggested is sizing in stages - i.e. 2 different bushings (which is not a long term fix as it's a pain in the behind). </p><p></p><p>I intend to try the Lee Collets dies as BuffBob suggested. </p><p></p><p>I think I'm learning that some of the more sophisticated equipment requires a more sohpisticated system (chamber / brass / bushing (die) dimensions fit relative to each other) where things are appropriately fitted to get the right results. Not suggesting across the board, just saying SOMETIMES.</p><p></p><p>Now whislt we are at it and not to highjack the thread, here's a question: Assuming the loaded round, and specifically the bullet, runout is minimal (say 0.0015" max), does it matter that the unloaded and sized case is more out of kilter? Or is straight at the end all that matters?</p></blockquote><p></p>
[QUOTE="LRHWAL, post: 217610, member: 5418"] I'm watching this with interest too. I have also just picked up a concentricity gauge. I've got a similar story - unsolved as yet. I will send a query to Redding Tech direct, but I see that Redding does point out that neck sizing thin brass fired in a factory (max SAAMI?) chamber results in too much sizing and out of kilter necks. (My question here of course is why this isn't a huge problem when necking down .308 Win to 6.5-08 / .260 Rem? Hmmm.....) I do "float" the die and shellholder with O-rings. Mine go from fired at 0.0005-0.001" to a sized anywhere from 0.004-0.010"! That said, my Win brass is pretty thin. The cases are sorted for max neck wall variance at 0.001 to 0.0015". One solution I've seen suggested is sizing in stages - i.e. 2 different bushings (which is not a long term fix as it's a pain in the behind). I intend to try the Lee Collets dies as BuffBob suggested. I think I'm learning that some of the more sophisticated equipment requires a more sohpisticated system (chamber / brass / bushing (die) dimensions fit relative to each other) where things are appropriately fitted to get the right results. Not suggesting across the board, just saying SOMETIMES. Now whislt we are at it and not to highjack the thread, here's a question: Assuming the loaded round, and specifically the bullet, runout is minimal (say 0.0015" max), does it matter that the unloaded and sized case is more out of kilter? Or is straight at the end all that matters? [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
What am I doing wrong??
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