I am playing around with weighing some 300wm brass. Can anyone tell me what accecptable differences should be? For instance out of 100 cases the weight ranges from 234.5 grains to 240 grains. So basicly that gives me a 3 percent deviation. 80% of them fell between 237 and 239 grains which is less than 1 percent. Should I just use those as my working pool? Any clarity someone can provide would be awesome.