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Rifles, Reloading, Optics, Equipment
Reloading
velocity difference with regards to case capacity
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<blockquote data-quote="Mysticplayer" data-source="post: 163775" data-attributes="member: 8947"><p><strong>Interesting</strong></p><p></p><p>From my experiences of measuring some brass, I would be really surprised if you could find such a situation using brass from the same brand and lot. You might find this in military brass...maybe.</p><p> </p><p>Most brass I have measured varied very little, if any at all, as far as case volume went AFTER fireforming.. This has been very interesting to me considering that I have been working with 'crappy' domestic brass.</p><p> </p><p>For me, I want the combustion volumes of the cases to be as close as possible. They don't have to weigh the same.</p><p> </p><p>You will find this level of difference by using brass from different brands. There will be a velocity difference but who is to say that wasn't also affected by such things as annealing, brass alloy/elasticity, flash hole dimensions, etc, etc </p><p> </p><p>As to an exact amount, just grab different brands and find two with the desired volume difference and fire them. Post the results as it would be interesting.</p><p> </p><p>Jerry</p></blockquote><p></p>
[QUOTE="Mysticplayer, post: 163775, member: 8947"] [b]Interesting[/b] From my experiences of measuring some brass, I would be really surprised if you could find such a situation using brass from the same brand and lot. You might find this in military brass...maybe. Most brass I have measured varied very little, if any at all, as far as case volume went AFTER fireforming.. This has been very interesting to me considering that I have been working with 'crappy' domestic brass. For me, I want the combustion volumes of the cases to be as close as possible. They don't have to weigh the same. You will find this level of difference by using brass from different brands. There will be a velocity difference but who is to say that wasn't also affected by such things as annealing, brass alloy/elasticity, flash hole dimensions, etc, etc As to an exact amount, just grab different brands and find two with the desired volume difference and fire them. Post the results as it would be interesting. Jerry [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
velocity difference with regards to case capacity
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