Re: Questions on lower sd and es
If the brass is near the end of it's useful life, I'd use other brass, because the next lot of brass you get may give you different results. If you expect several more loadings from that brass and you have a bunch of it, then your results will be useful for a while.
Kinda depends on the details. If your results will be useable for a lot of future reloads, or if the brass is about dead.
If some is good and more is better, then too much is just right.
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