It seems to me that any answer to that would be quite speculative, but you might consider trying to contact the Father of the .22 TCM, Fred Craig.
I can't imagine a better place for that question.
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Attention Brass rats and other reloaders: I really need .327 Federal Magnum brass, no lot size too small. Tell me what caliber you need and I'll see what I have to swap. PM me and we'll discuss.
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