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Rifles, Reloading, Optics, Equipment
Reloading
Weird Issue with Run out
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<blockquote data-quote="SBruce" data-source="post: 458072" data-attributes="member: 21068"><p>.002 runout in a sized empty case will alot of times give .004 or double the runout by time we load it.</p><p> </p><p>As Padd says, check during the process to determine the true culprit. I check mine for neck thickness variance and runout prior to resizeing, and can eliminate some runout that way. </p><p> </p><p>Some runout can also be eliminated by resizing and seating in a two stage process (partially size/seat with one partial stroke, rotate case a 1/4 to 1/2 revolution and complete the size/seat with another full stroke.</p><p> </p><p>You mentioned removing the expander ball on the de-capping rod. Sometimes it's better to use the expander, because if you don't the neck tension is too much to seat a bullet as straight as possible. Really forcing the bullet into the neck can cause alot of runout all by itself. Flat base bullets especially.</p><p> </p><p>I am not familiar with the Lee Collet die you're using, I tried some lee dies for my 220 Swift about 20 years ago and wasn't at all impressed. I quit using them and never went back.</p><p> </p><p>Disregard some of this, I see you were posting at the same time I was typing.</p></blockquote><p></p>
[QUOTE="SBruce, post: 458072, member: 21068"] .002 runout in a sized empty case will alot of times give .004 or double the runout by time we load it. As Padd says, check during the process to determine the true culprit. I check mine for neck thickness variance and runout prior to resizeing, and can eliminate some runout that way. Some runout can also be eliminated by resizing and seating in a two stage process (partially size/seat with one partial stroke, rotate case a 1/4 to 1/2 revolution and complete the size/seat with another full stroke. You mentioned removing the expander ball on the de-capping rod. Sometimes it's better to use the expander, because if you don't the neck tension is too much to seat a bullet as straight as possible. Really forcing the bullet into the neck can cause alot of runout all by itself. Flat base bullets especially. I am not familiar with the Lee Collet die you're using, I tried some lee dies for my 220 Swift about 20 years ago and wasn't at all impressed. I quit using them and never went back. Disregard some of this, I see you were posting at the same time I was typing. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Weird Issue with Run out
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