Excellent point. I went through the trimmed pieces and found all of them under 34.2mm (~1.348") and tossed them. That was a grand total of 8 cases. Seems false economy to try to save 8 cases. I should've just done that to begin with.
I adjusted to cut my cases a bit longer as well to avoid this issue, so they size out on the longer side. I may need to trim a bit more, but that's fine.
Glad I asked here, I hadn't thought about neck tension and setback.