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Rifles, Reloading, Optics, Equipment
Gunsmithing
Measuring Overall length and Throat Erosion
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<blockquote data-quote="Roeder" data-source="post: 1345739" data-attributes="member: 87340"><p>If you are checking your OAL with a bullet from a different lot than you used the first time, your measurement <em>WILL</em> be different and could be shorter or longer. All mass produced bullets vary somewhat as to ogive shape and length from one lot to another. Even though the Hornady OAL tool engages the bullet close to the same area that contacts the throat, it is not exact. A miniscule difference in the ogive curve will make a much larger difference in seating depth. I have seen different lots change the "Jam" length by as much as .050.</p></blockquote><p></p>
[QUOTE="Roeder, post: 1345739, member: 87340"] If you are checking your OAL with a bullet from a different lot than you used the first time, your measurement [I]WILL[/I] be different and could be shorter or longer. All mass produced bullets vary somewhat as to ogive shape and length from one lot to another. Even though the Hornady OAL tool engages the bullet close to the same area that contacts the throat, it is not exact. A miniscule difference in the ogive curve will make a much larger difference in seating depth. I have seen different lots change the "Jam" length by as much as .050. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Gunsmithing
Measuring Overall length and Throat Erosion
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