I had a partial case head separation using a 1.8oz buffer

[LRRPF52]

- Buffer Weight: 1.8 oz
- Buffer Spring ProfileDW length Flat-wire spring

This is the buffer, spring, and RET the OP used folks:



If you want to experience case head separations, use a buffer like this.

This is the smoking gun that was overlooked because of all the conjecture, derails, and unfamiliarity with the design and its history.

I’m very conflicted with how I want to approach this moving forward when it comes to diagnosing and trouble-shooting.

A great lesson I personally take for granted is that I never have used anything less than an ST-T2 with carbine spring, or 2.9oz buffer with increased power spring for my carbine or pistol builds in this cartridge.

Sorry for all the distractions that happened in this thread stonehog.

You specifically asked for guidance in that area, and we missed it.