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Rifles, Reloading, Optics, Equipment
Reloading
crushing case necks when using expander mandrel to open case neck on a 338SS
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<blockquote data-quote="MAD10" data-source="post: 2874606" data-attributes="member: 29370"><p>I considered it …</p><p></p><p>I think the annealing is the problem…meaning "over annealed" and the brass is too soft especially with a 40° shoulder and causing some to fail after already feeling the pressure going from .284 to .308</p><p></p><p>problem with my theory is according to Rich he took a piece of brass from this lot and opened it up in two steps without an issue…</p><p></p><p>if it's not the brass being too soft then maybe my mandrel is off at the taper</p><p></p><p>hopefully the new mandrel will make a difference</p><p></p><p>I've rarely crushed a neck, let alone several, and when I have I could identify the reason</p></blockquote><p></p>
[QUOTE="MAD10, post: 2874606, member: 29370"] I considered it … I think the annealing is the problem…meaning “over annealed” and the brass is too soft especially with a 40° shoulder and causing some to fail after already feeling the pressure going from .284 to .308 problem with my theory is according to Rich he took a piece of brass from this lot and opened it up in two steps without an issue… if it’s not the brass being too soft then maybe my mandrel is off at the taper hopefully the new mandrel will make a difference I‘ve rarely crushed a neck, let alone several, and when I have I could identify the reason [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
crushing case necks when using expander mandrel to open case neck on a 338SS
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