Yes, no, no, yes. There IS a difference in case specs as to where you should not use whisper brass in a blk chamber due to case dimensions being longer in the neck on whisper. But the loads between the two are very similar if not the same.
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Yes, no, no, yes. There IS a difference in case specs as to where you should not use whisper brass in a blk chamber due to case dimensions being longer in the neck on whisper. But the loads between the two are very similar if not the same.