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Hey guys. Been reloading for a few decades now. Thought I'd try my hand at some 7.62x39. I've noticed that after resizing the brass. That very Few (maybe 1 in 30?) actually need to be trimmed down to 1.528". I've resized about 25 so far. And I can't seem to get any brass trimmings. I take the digital calipers to them and they almost all come in 1.527" or a smidge under already. The couple I actually got to trim were 1.530. So not much at all. Is it due to the cartridge being such a low pressure round that there's not much expansion??
thanks.
eric
thanks.
eric