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Rifles, Reloading, Optics, Equipment
Reloading
Expander mandrel sets
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<blockquote data-quote="VinceMule" data-source="post: 2874442" data-attributes="member: 122164"><p>Measuring the run out of your seated rounds after using a bushing sizer can leade you to bang your head on the wall in frustration!</p><p></p><p>I have got my very best run out with Forster std dies, with the neck honed out at Forster($12 when you purchase the die from them), then use a mandrel. I did not come up with this method, I coped with a guy that tests bullets for Berger at 1000 yards.</p><p></p><p>Collet dies with various sizes of mandrels can also produce very, very concentric seated bullets, but this is NOT popular because it is different. Lee sells several sizes up and down from caliber in .001 increments. You can put the mandrel in a 1/4" drill and take the mandrel down to size with emory cloth and oil...slow and easy, slow and easy.</p></blockquote><p></p>
[QUOTE="VinceMule, post: 2874442, member: 122164"] Measuring the run out of your seated rounds after using a bushing sizer can leade you to bang your head on the wall in frustration! I have got my very best run out with Forster std dies, with the neck honed out at Forster($12 when you purchase the die from them), then use a mandrel. I did not come up with this method, I coped with a guy that tests bullets for Berger at 1000 yards. Collet dies with various sizes of mandrels can also produce very, very concentric seated bullets, but this is NOT popular because it is different. Lee sells several sizes up and down from caliber in .001 increments. You can put the mandrel in a 1/4" drill and take the mandrel down to size with emory cloth and oil...slow and easy, slow and easy. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Expander mandrel sets
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