I had a partial case head separation using a 1.8oz buffer
The case is a partial case head separation from incorrect/excess cyclic rate.

Notice how the case shear is clocked perfectly with the extractor location.

Lapua brass camouflaged the issue because of its strength.

Had these been a weaker brass alloy, I suspect the failure would have happened much earlier.
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I had a partial case head separation using a 1.8oz buffer - by LRRPF52 - 09-29-2022, 02:00 AM

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