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Rifles, Reloading, Optics, Equipment
Reloading
Finding Jam - I thought I knew how
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<blockquote data-quote="orkan" data-source="post: 2070723" data-attributes="member: 25377"><p>I would definitely call it the Wheeler method. I'm willing to bet he did it before I did. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> I had been doing it for a decade before I uploaded that video, but I'm betting others were doing it far longer than I. I didn't know there was a prior video outlining it when I uploaded mine. I was going to remove mine, but a few folks said they liked my presentation and encouraged me to leave it up.</p><p></p><p></p><p></p><p>This has to do with the various neck thickness and metallurgical structure of the different brands of brass. Even among the same brand, cases which have different numbers of firings or are treated differently will produce different measurements at the same seating die setting. The amount of force required to overcome the varying degrees of compression will show up as different lengths. That seating force variance requires different adjustments to the micrometer on the seating die. </p><p></p><p>If you are setting up a case as defined in the Wheeler method, then you will achieve a precise measurement that will be independent of brass. That measurement will be good with that bullet, regardless of brass manufacturer. However, the adjustment that you need to have in your seating die will be very component specific, right down to the number of firings on the case. They must be identical and uniform for the seating force to remain static and thus produce bullets seating at the correct measurement. Adjustments to the seating die will be needed as you move from lot to lot, in order to stay on top of your desired measurement. </p><p></p><p>The same thing can be seen when moving into compressed loads. You'll have to run the seating stem deeper to overcome the extra force resisting your efforts, despite the fact you're working with the same components.</p></blockquote><p></p>
[QUOTE="orkan, post: 2070723, member: 25377"] I would definitely call it the Wheeler method. I'm willing to bet he did it before I did. :) I had been doing it for a decade before I uploaded that video, but I'm betting others were doing it far longer than I. I didn't know there was a prior video outlining it when I uploaded mine. I was going to remove mine, but a few folks said they liked my presentation and encouraged me to leave it up. This has to do with the various neck thickness and metallurgical structure of the different brands of brass. Even among the same brand, cases which have different numbers of firings or are treated differently will produce different measurements at the same seating die setting. The amount of force required to overcome the varying degrees of compression will show up as different lengths. That seating force variance requires different adjustments to the micrometer on the seating die. If you are setting up a case as defined in the Wheeler method, then you will achieve a precise measurement that will be independent of brass. That measurement will be good with that bullet, regardless of brass manufacturer. However, the adjustment that you need to have in your seating die will be very component specific, right down to the number of firings on the case. They must be identical and uniform for the seating force to remain static and thus produce bullets seating at the correct measurement. Adjustments to the seating die will be needed as you move from lot to lot, in order to stay on top of your desired measurement. The same thing can be seen when moving into compressed loads. You'll have to run the seating stem deeper to overcome the extra force resisting your efforts, despite the fact you're working with the same components. [/QUOTE]
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Finding Jam - I thought I knew how
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