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Rifles, Reloading, Optics, Equipment
Reloading
case head seperation?
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<blockquote data-quote="MagnumManiac" data-source="post: 550609" data-attributes="member: 10755"><p>All the answers given so far are spot on, but no one has said what you're looking at!</p><p>That is the normal expansion line, where the solid web meets the case wall. The reason the rear of the case looks shiny is because it doesn't expand to touch the chamber, whereas just in front of the web the case expands to touch the chamber leaving behind the tooling marks and dulling the brass.</p><p></p><p>As kyhareaiser pointed out, most case head separations occur about 1/3 up the case, a bright shiny and wide ring appears before the actual separation, normally in excess of .050" wide, it looks very different to the normal thin expansion line.</p><p></p><p>gun)</p></blockquote><p></p>
[QUOTE="MagnumManiac, post: 550609, member: 10755"] All the answers given so far are spot on, but no one has said what you're looking at! That is the normal expansion line, where the solid web meets the case wall. The reason the rear of the case looks shiny is because it doesn't expand to touch the chamber, whereas just in front of the web the case expands to touch the chamber leaving behind the tooling marks and dulling the brass. As kyhareaiser pointed out, most case head separations occur about 1/3 up the case, a bright shiny and wide ring appears before the actual separation, normally in excess of .050" wide, it looks very different to the normal thin expansion line. gun) [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
case head seperation?
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