Thanks for the comments. Is it best to start with unfired brass and make up lots keeping up with number of times fired? And is there a parameter to work within reference the throw away date of cases? How are the cases best marked? The book says use fingernail polish and color code lots with marks to indicate number of times fired. I'll load first for a new P1 made in 64 for 9mm and a NEF(H&R) bull barrel in .223, and a MKVI in .45. Definitely won't try them in my others until later.
RK
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