Weighing cases??

Take 2 of your heaviest cases from your lot and use 2 of your heaviest bullets from lot your using and load them up.
next take 2 lightest cases and load 2 lightest bullets your using.
shoot a 4 shot group at 300 and report back. I bet you get a double group..
 
Not sure if it makes any difference, but I separate every box of Lapua brass into 50 piece lots. Ray

I do a bell curve sort. It's really interesting to see the highs, lows and the median, graphically. I usually sort into 5 weight ranges. I use the 50 pieces that are closest to the middle of the bell curve/closest in weight. I think it makes a difference, but the question is; is it enough of a difference ?. For any given box of brass, you only do it once, so it's not bad. My peace of mind comes from knowing that I won't have a situation where I have (as an example) 44 pieces that are for all intents and purposes, the same weight, along with the three heaviest and the three lightest cases from the box and not knowing when the highest/lowest will be chambered. I use Lapua brass (.223, 6,6.5x47L, .308W) and don't load it up hot, so it lasts for a longgg time. My brass is babied and stays with each specific rifle, so I don't have to full length resize. Lapua is the shizzle.

I also use an A&D FX120i scale along with Adam Macdonald's Automated Powder Trickler to weigh my powder charges;

http://www.autotrickler.com/index.html

The whole setup really does work well. It isn't always dead nuts on exact for each round, but it's very close and you can manually adjust by the individual grain very easily. One kernel of Varget is .02 Grain, ask me how I know. ;) Same concept for other powders....
 
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