I`ve taken to weighing/sorting brass now, even from the same head stamp. Some vary considerably with in the same caliber. As a hand loader, another variable I try to eliminate.
Use an electronic scale, goes a hellofalot faster.
I weigh all of my brass. Whenever I get a fresh lot, I size, trim, deburr the flash holes then weigh them. I’ll usually weigh 15 pieces, take an average of that then weigh every piece. For my purposes, I set a parameter of +/- 1.5 gr. as acceptable. For example, if the average of the first 15 pieces comes to 165 gr. then my parameters would be a low of 163.5 and a high of 166.5. Anything outside of that is separated for fouling/plinking.
This is for brass anywhere from .243 to 30/06 size. Of course, I use my electronic scale for this. I use my old balance beam for powder as I trust it more for more exacting work.
