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Rifles, Reloading, Optics, Equipment
Reloading
Belted Magnums--Headspace on Shoulder or Belt?
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<blockquote data-quote="boomtube" data-source="post: 410042" data-attributes="member: 9215"><p>"you said that ... "Any fired bottle neck case has expanded to fit the chamber in both diameter and length (to the shoulder)"</p><p> </p><p>Woods, yes, but you read more into that than is there! I meant the case had been expanded to fit the chamber under the 50K plus PSI pressure, didn't mean it stayed fully expanded after a single firing! My point being that after the first firing all we NEED to do is restore the sized neck to the fired position and chambering will be fine. The Hornady case tools you show on your very nice B&S caliper is one of the ways it can be measured and done.</p><p> </p><p> </p><p>"I have set my die and sized as many as 50 cases and had variation of shoulder position in the range of .001" or even less. I do keep my cases marked and sorted by how many firings they have been through so the work hardening is the same."</p><p> </p><p>You have had MUCH better fortune than I. Or anyone else I know.</p><p> </p><p> </p><p> </p><p> </p><p>BobbyL, I was specifically addressing the OP's question of how he should resize cases his belted magnum hunting rifle, nothing I said was meant to address BR shootin' or BR accuracy techniques. Nothing I said or intended to say about FL sizing for easy belted magnum chambering and long case life could possibly be a certain process for best accuracy, seems that's clearly a matter of experimentation for each rifle. Surely you aren't suggesting <u>everyone</u> will get best accuracy in <u>every</u> rifle simply by setting fired shoulders back 2 thou, even if it were possible for most of us to be that repeatable. ??</p></blockquote><p></p>
[QUOTE="boomtube, post: 410042, member: 9215"] "you said that ... "Any fired bottle neck case has expanded to fit the chamber in both diameter and length (to the shoulder)" Woods, yes, but you read more into that than is there! I meant the case had been expanded to fit the chamber under the 50K plus PSI pressure, didn't mean it stayed fully expanded after a single firing! My point being that after the first firing all we NEED to do is restore the sized neck to the fired position and chambering will be fine. The Hornady case tools you show on your very nice B&S caliper is one of the ways it can be measured and done. "I have set my die and sized as many as 50 cases and had variation of shoulder position in the range of .001" or even less. I do keep my cases marked and sorted by how many firings they have been through so the work hardening is the same." You have had MUCH better fortune than I. Or anyone else I know. BobbyL, I was specifically addressing the OP's question of how he should resize cases his belted magnum hunting rifle, nothing I said was meant to address BR shootin' or BR accuracy techniques. Nothing I said or intended to say about FL sizing for easy belted magnum chambering and long case life could possibly be a certain process for best accuracy, seems that's clearly a matter of experimentation for each rifle. Surely you aren't suggesting [U]everyone[/U] will get best accuracy in [U]every[/U] rifle simply by setting fired shoulders back 2 thou, even if it were possible for most of us to be that repeatable. ?? [/QUOTE]
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Belted Magnums--Headspace on Shoulder or Belt?
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