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Rifles, Reloading, Optics, Equipment
Reloading
300 RUM load development questions
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<blockquote data-quote="7stw" data-source="post: 746997" data-attributes="member: 22854"><p>My best guess is that if you are getting runout on virgin brass, then it may not have been true to begin with, which is probably the case, so I don't think that your seater is the problem. What ARE you using? </p><p>As far as can you use the resizer without the expander, that isn't possible, unless you are using bushing dies. The die , as it is designed, squeezes in on the neck, then expands it to a size that is just short of your nominal bullet diameter. That typically gives enough tension to hold the bullet in place until fired. If you remove the expander, the neck will be so constricted that you will not be able to insert your bullet, or it will be TOO tight. Take your time, and get familiar with your set up, and take measurements. It will come together.</p></blockquote><p></p>
[QUOTE="7stw, post: 746997, member: 22854"] My best guess is that if you are getting runout on virgin brass, then it may not have been true to begin with, which is probably the case, so I don't think that your seater is the problem. What ARE you using? As far as can you use the resizer without the expander, that isn't possible, unless you are using bushing dies. The die , as it is designed, squeezes in on the neck, then expands it to a size that is just short of your nominal bullet diameter. That typically gives enough tension to hold the bullet in place until fired. If you remove the expander, the neck will be so constricted that you will not be able to insert your bullet, or it will be TOO tight. Take your time, and get familiar with your set up, and take measurements. It will come together. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
300 RUM load development questions
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