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Rifles, Reloading, Optics, Equipment
Reloading
help! seated bullet runout!
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<blockquote data-quote="Frogman77" data-source="post: 404739" data-attributes="member: 15339"><p>Here's my process:</p><p> </p><p>new virgin lapua brass</p><p> </p><p>I don't trim them at first because they're already right at about 2.487" within .001"</p><p> </p><p>expand with sinclair mandrel</p><p> </p><p>neck turn with forster turner to .014"-.0145"</p><p> </p><p>size in redding body die.</p><p> </p><p>Redding bushing die .336" bushing for a final od neck of .335"</p><p> </p><p>Redding comp seater with vld seater stem </p><p> </p><p>208 hornady amax. (neck tension should be right around .001" Bullets don't budge at all even with firm pressure on the table.</p><p> </p><p>(After firing 4 times I anneal the necks)</p><p> </p><p>After firing:</p><p> </p><p>tumble wipe clean</p><p> </p><p>clean inside of necks with steel wool</p><p> </p><p>bump shoulders back .001-.002"</p><p> </p><p>Size neck down with bushing die (Fired cases measure .339 to .3395" on the necks. Using the .336" bushing gets me right at .335" for a final neck od. Loaded neck OD is .336")</p><p> </p><p>Trim and chamfer on the wilson trimmer (again, issue with un even chamfer on the wilson vld tool may or may not be a culprit here.)</p><p> </p><p>BAck to the tumbler to remove remaining case lube.</p><p> </p><p>After wards I run it back through the neck sizer for good measure, make sure nothing got dinged around in the tumbler.</p><p> </p><p>Total runout on the case necks after all prep is no more than .001"</p><p> </p><p>Charge then seat bullet half way rotate 180 degrees and finish seating.</p><p> </p><p>I've tried floating the seating die and not locking down the lock ring and I also use a rubber o ring around my shellholder instead of the retainer pin to help the case self align.</p><p> </p><p>results are still the same. .002-.007" TIR measured about 1/8" from the tip.</p><p> </p><p>All the lapua brass that I measure for neck thickness variance out of 70 cases only 12 measured .0015" in neck thickness variance. All the rest were .001" or less. </p><p> </p><p>Unless this first batch of 30 cases I loaded up had more cases in it with .002" or more of neck thickness variance to begin with??? Doesn't seem likely with lapua brass, and even so, would .002" of neck thickness variance cause up to .007" of TIR on a loaded round???</p><p> </p><p>Thanks for the input guys. Let me know what you think about my loading procedure and if there's something I might be over looking.</p></blockquote><p></p>
[QUOTE="Frogman77, post: 404739, member: 15339"] Here's my process: new virgin lapua brass I don't trim them at first because they're already right at about 2.487" within .001" expand with sinclair mandrel neck turn with forster turner to .014"-.0145" size in redding body die. Redding bushing die .336" bushing for a final od neck of .335" Redding comp seater with vld seater stem 208 hornady amax. (neck tension should be right around .001" Bullets don't budge at all even with firm pressure on the table. (After firing 4 times I anneal the necks) After firing: tumble wipe clean clean inside of necks with steel wool bump shoulders back .001-.002" Size neck down with bushing die (Fired cases measure .339 to .3395" on the necks. Using the .336" bushing gets me right at .335" for a final neck od. Loaded neck OD is .336") Trim and chamfer on the wilson trimmer (again, issue with un even chamfer on the wilson vld tool may or may not be a culprit here.) BAck to the tumbler to remove remaining case lube. After wards I run it back through the neck sizer for good measure, make sure nothing got dinged around in the tumbler. Total runout on the case necks after all prep is no more than .001" Charge then seat bullet half way rotate 180 degrees and finish seating. I've tried floating the seating die and not locking down the lock ring and I also use a rubber o ring around my shellholder instead of the retainer pin to help the case self align. results are still the same. .002-.007" TIR measured about 1/8" from the tip. All the lapua brass that I measure for neck thickness variance out of 70 cases only 12 measured .0015" in neck thickness variance. All the rest were .001" or less. Unless this first batch of 30 cases I loaded up had more cases in it with .002" or more of neck thickness variance to begin with??? Doesn't seem likely with lapua brass, and even so, would .002" of neck thickness variance cause up to .007" of TIR on a loaded round??? Thanks for the input guys. Let me know what you think about my loading procedure and if there's something I might be over looking. [/QUOTE]
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help! seated bullet runout!
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