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Rifles, Reloading, Optics, Equipment
Reloading
Runout increasing when seating
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<blockquote data-quote="abinok" data-source="post: 112476" data-attributes="member: 16"><p>Totally agree with kirby, with the FB die, you should be seeing much less runout than you are. I suspect you are seeing case neck thickness variations manafest as runout. That one of the problems of outside sizing brass that hasn't been neck turned. The outside gets round, and the inside gets egg shaped to whatever degree your neck walls vary in thickness. After the bullet gets seated, these variations get pushed back to the outside of the case where your gauge sees them as runout. Ill bet youll nottice a correlation between measured TIR after seating, and neck thickness variations if you check some cases that have very consistantly thick necks to some that have .003" or more variation.</p></blockquote><p></p>
[QUOTE="abinok, post: 112476, member: 16"] Totally agree with kirby, with the FB die, you should be seeing much less runout than you are. I suspect you are seeing case neck thickness variations manafest as runout. That one of the problems of outside sizing brass that hasn't been neck turned. The outside gets round, and the inside gets egg shaped to whatever degree your neck walls vary in thickness. After the bullet gets seated, these variations get pushed back to the outside of the case where your gauge sees them as runout. Ill bet youll nottice a correlation between measured TIR after seating, and neck thickness variations if you check some cases that have very consistantly thick necks to some that have .003" or more variation. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Runout increasing when seating
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