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Thanks for confirming that the shoulder is not an issue.
If it is of any help the dimensions on fired brass here ( at 60-65kPSI peak) are also 0.4705" at the expansion line - the point of maximum...

For the case head to have expanded to give a tight chamber fit I think the primer pocket would not be usable.
Your load also seems right for around 60kPSI peak in a 25-26" barrel.

A thick...