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Rifles, Reloading, Optics, Equipment
Reloading
Neck tension
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<blockquote data-quote="Tac-O" data-source="post: 3059792" data-attributes="member: 109994"><p>I've never messed with neck tension much. I've just used the expander ball or mandrel that I have and rolled with it. I did at one time use the Lee FCD on all my rounds, but discontinued it due to being an extra step and not really seeing any noticeable gains on the target from my bolt guns.</p><p></p><p>For example, my FL die takes my 30-284 brass neck OD down to 0.333. the neck walk thickness is around 0.0145-0.015. loaded neck diameter is 0.3375-0.338. the mandrel I use to expand the neck is 0.336-0.3365.</p><p></p><p>What "tension" would that be?</p><p></p><p>with that particular load, my 30 shot ES and SD was not good relative to what most people strive for. I have about 0.250 of bearing surface in the neck. I also always get sooted necks after firing. I have thought that maybe increasing the seating depth or using a smaller mandrel might get me better ES/SD. Or, using the Lee FCD.</p><p></p><p>is it worth a try? Also, is it likely that I'd see increased pressure for that given load trying a smaller mandrel or FCD?</p></blockquote><p></p>
[QUOTE="Tac-O, post: 3059792, member: 109994"] I've never messed with neck tension much. I've just used the expander ball or mandrel that I have and rolled with it. I did at one time use the Lee FCD on all my rounds, but discontinued it due to being an extra step and not really seeing any noticeable gains on the target from my bolt guns. For example, my FL die takes my 30-284 brass neck OD down to 0.333. the neck walk thickness is around 0.0145-0.015. loaded neck diameter is 0.3375-0.338. the mandrel I use to expand the neck is 0.336-0.3365. What "tension" would that be? with that particular load, my 30 shot ES and SD was not good relative to what most people strive for. I have about 0.250 of bearing surface in the neck. I also always get sooted necks after firing. I have thought that maybe increasing the seating depth or using a smaller mandrel might get me better ES/SD. Or, using the Lee FCD. is it worth a try? Also, is it likely that I'd see increased pressure for that given load trying a smaller mandrel or FCD? [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Neck tension
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