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Rifles, Reloading, Optics, Equipment
Reloading
proper amount of neck tension
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<blockquote data-quote="Broz" data-source="post: 845791" data-attributes="member: 7503"><p>This statements needs to be further clarified Mike. I agree with you, but it also needs to be noted that when using a bushing die, and only down sizing .002 after a few firings the brass hardens and neck tension will be lost from added spring back. The cure is to either drop down in bushing size or anneal the brass to return it to it's original softer state.</p><p> </p><p>My first hand example is this: 338 LM in Lapua brass. Great bullet hold with a .366 bushing. After 4 firings some of the bullets were loose. This indicated loss of neck tension as well as inconsistent neck tension. I dropped to a .365 bushing and they were all tight again. At this point I bought my first annealing machine and annealed this same brass. I returned to using the .366 bushing and all was tight again. </p><p> </p><p>The problem I seen with dropping a bushing size was that not all cases needed the smaller bushing. This was proof to me that I indeed had inconsistent neck tension. I find that annealing more often keeps all the necks at the same hardness and allows me to run the lighter tension I desire and still hold all the bullets the same.</p><p> </p><p>Jeff</p></blockquote><p></p>
[QUOTE="Broz, post: 845791, member: 7503"] This statements needs to be further clarified Mike. I agree with you, but it also needs to be noted that when using a bushing die, and only down sizing .002 after a few firings the brass hardens and neck tension will be lost from added spring back. The cure is to either drop down in bushing size or anneal the brass to return it to it's original softer state. My first hand example is this: 338 LM in Lapua brass. Great bullet hold with a .366 bushing. After 4 firings some of the bullets were loose. This indicated loss of neck tension as well as inconsistent neck tension. I dropped to a .365 bushing and they were all tight again. At this point I bought my first annealing machine and annealed this same brass. I returned to using the .366 bushing and all was tight again. The problem I seen with dropping a bushing size was that not all cases needed the smaller bushing. This was proof to me that I indeed had inconsistent neck tension. I find that annealing more often keeps all the necks at the same hardness and allows me to run the lighter tension I desire and still hold all the bullets the same. Jeff [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
proper amount of neck tension
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