Still thinking . . .

This is the case that jammed. It sat in a hot chamber, enough to get scorched. But the bottom of the shoulder is bright, meaning (I think) that it was hard up against the end of the chamber.
I compared it to a just-sized case:

Bad angle – it looks bigger – it ain’t. Both pop in and out of the go-no go headspace/length tool (whatever its name is). Another view shows manual extraction scrapes:

No conclusions yet. Going to rain all day. I guess I’ll get wet at the range.

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