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Rifles, Reloading, Optics, Equipment
Reloading
Brass Separation Above Belt
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<blockquote data-quote="J E Custom" data-source="post: 1381245" data-attributes="member: 2736"><p>That's actually what I like to do until the cases start being hard to chamber. Then I will size only enough to chamber. I have never had to bump the shoulder on purpose because the case shoulder will allow .004 to .006 thousandths of crush with little force . I also Like to anneal the necks and shoulder after 3 or 4 sizing's And check for cartridge growth against the original case length. This way I can better predict case life and neck thinning. when using a full length die, it sizes the entire case body also so by backing of on the full length die you are essentially just full sizing the entire case (Just a little less than the die can do).</p><p></p><p>The less you work the brass the better the case life. This is also the reason I prefer bushing dies. They size the neck one time each loading, firing expands the neck to fit the chamber and the bushing sizes it down. so the neck has been worked twice. a conventional die over sizes the neck, then the expander ball sizes it back up to get the desired bullet grip. This means that the brass is worked 3 times for each loading as compared to only twice using the bushing. It doesn't sound like much difference but it is a 33% improvement.</p><p></p><p>Also High pressure does the same thing because it expand the case to a larger size than the chamber making it a must to size the entire case body, shoulder and neck reducing brass life and thinning the case until you have to trim it to chamber length. If one choses to load hot, brass/case life is shortened (The price we pay for speed) This is another advantage of 30o to 40o shoulders (These case designs grow very little even with hot loads and tend not to lengthen very much more than 1.or 2 thousandths per firing.</p><p></p><p>Just my experiences</p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1381245, member: 2736"] That's actually what I like to do until the cases start being hard to chamber. Then I will size only enough to chamber. I have never had to bump the shoulder on purpose because the case shoulder will allow .004 to .006 thousandths of crush with little force . I also Like to anneal the necks and shoulder after 3 or 4 sizing's And check for cartridge growth against the original case length. This way I can better predict case life and neck thinning. when using a full length die, it sizes the entire case body also so by backing of on the full length die you are essentially just full sizing the entire case (Just a little less than the die can do). The less you work the brass the better the case life. This is also the reason I prefer bushing dies. They size the neck one time each loading, firing expands the neck to fit the chamber and the bushing sizes it down. so the neck has been worked twice. a conventional die over sizes the neck, then the expander ball sizes it back up to get the desired bullet grip. This means that the brass is worked 3 times for each loading as compared to only twice using the bushing. It doesn't sound like much difference but it is a 33% improvement. Also High pressure does the same thing because it expand the case to a larger size than the chamber making it a must to size the entire case body, shoulder and neck reducing brass life and thinning the case until you have to trim it to chamber length. If one choses to load hot, brass/case life is shortened (The price we pay for speed) This is another advantage of 30o to 40o shoulders (These case designs grow very little even with hot loads and tend not to lengthen very much more than 1.or 2 thousandths per firing. Just my experiences J E CUSTOM [/QUOTE]
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Brass Separation Above Belt
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