Unless you ate loading at max, case brand wont matter. BUT, ther are cases to stay away from. FM & IMT have an internal step. This is a natural place for a separation.
I use range brass exclusively. Slight diff in dimensions between foreign & domestic brass has me leaving the foreign stuff on the ground for others. I stick to fed,Win, speer/blaser, RP & pmc seems fine.
Btw, same goes for substituting primer brands. It wont matter unless loading at max or +p. At max, everything matters. So if you work a load up to max or mac +, do not substitute anything w/o dropping 5% & workingback up. Stay at midrange & below, none of the minutia matters.

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NRA Cert. Inst. IDPA CSO