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Rifles, Reloading, Optics, Equipment
Reloading
Into lands or false shoulder to fire form belted brass
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<blockquote data-quote="nicholasjohn" data-source="post: 1771436" data-attributes="member: 109113"><p>You could measure the length to the shoulder on your unfired brass with a comparator, and see how far it's being pushed forward on the first firing when you just put one in the chamber and shoot it in the standard fashion. ( That is, headspacing on the belt, as intended.) If the difference is large, putting the secondary shoulder in there for headspacing may be a good idea. I'm guessing though, that the difference will not be very large. If you sacrifice a fired case and section it, like somebody suggested in this thread, you'll be able to see how much stretch there was just ahead of the web. If it got pretty thin on one firing, you will have your answer. </p><p></p><p>Another thing to keep in mind is that if you do decide to use the secondary shoulder method, the extra sizing of necking the case up and hten back down to establish that shoulder is going to work-harden your bass as much as an addition firing & sizing would have. You'll need to figure that into your annealing program, if you do anneal your brass.</p><p></p><p>As expensive as good brass is, I can see why you have this concern. I'm interested in seeing how this turns out for you. I have had the same thoughts about this as you have. Keep us posted on how this one goes for you.</p></blockquote><p></p>
[QUOTE="nicholasjohn, post: 1771436, member: 109113"] You could measure the length to the shoulder on your unfired brass with a comparator, and see how far it's being pushed forward on the first firing when you just put one in the chamber and shoot it in the standard fashion. ( That is, headspacing on the belt, as intended.) If the difference is large, putting the secondary shoulder in there for headspacing may be a good idea. I'm guessing though, that the difference will not be very large. If you sacrifice a fired case and section it, like somebody suggested in this thread, you'll be able to see how much stretch there was just ahead of the web. If it got pretty thin on one firing, you will have your answer. Another thing to keep in mind is that if you do decide to use the secondary shoulder method, the extra sizing of necking the case up and hten back down to establish that shoulder is going to work-harden your bass as much as an addition firing & sizing would have. You'll need to figure that into your annealing program, if you do anneal your brass. As expensive as good brass is, I can see why you have this concern. I'm interested in seeing how this turns out for you. I have had the same thoughts about this as you have. Keep us posted on how this one goes for you. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Into lands or false shoulder to fire form belted brass
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