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Rifles, Reloading, Optics, Equipment
Reloading
Brass Case Head Separation after 6 firings
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<blockquote data-quote="Rflshootr" data-source="post: 2531246" data-attributes="member: 10284"><p>Anytime you blow a case out to a larger diameter, you lose length. The reason is because you are increasing the circumference. A larger circumference requires more metal. So to get that larger diameter, the extra metal needs to come from somewhere. More metal just doesn't magically appear, so the length shortens.</p><p>πD (3.1416 x Diameter) will give you the circumference. Just for math fun, take the starting diameter of the body/shoulder junction on both cartridges and figure the difference. Then do the 2 neck diameters. That will tell you how much difference in length you are changing the circumference.....next math class is "pies are square" which gives the area increase. <img class="smilie smilie--emoji" loading="lazy" alt="😁" title="Beaming face with smiling eyes :grin:" src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f601.png" data-shortname=":grin:" /></p></blockquote><p></p>
[QUOTE="Rflshootr, post: 2531246, member: 10284"] Anytime you blow a case out to a larger diameter, you lose length. The reason is because you are increasing the circumference. A larger circumference requires more metal. So to get that larger diameter, the extra metal needs to come from somewhere. More metal just doesn't magically appear, so the length shortens. πD (3.1416 x Diameter) will give you the circumference. Just for math fun, take the starting diameter of the body/shoulder junction on both cartridges and figure the difference. Then do the 2 neck diameters. That will tell you how much difference in length you are changing the circumference.....next math class is "pies are square" which gives the area increase. 😁 [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Brass Case Head Separation after 6 firings
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