For pure accuracy, I sort a batch to the same weight. For hunting, I sort them to one grain. (Example 275.0 to 275.9) so they are all in that range, Anything that is 275. all batches are within 1 grain this way.
There will always be a few that exceed this weight range and if they are not over 2 grains different, I use them for fouler's or site'rs. anything over 2 grains are used for different bullet seating gauges, and keep them in my die set for that cartridges. Normally I don't end up with over 2 or 3 of these.
Good quality brass will normally end up with most being less than one grain difference if well prepped.
For most shooting One grain spread will give you good performance. If you have a really good load and want to see what it will do, sort to zero difference and zero runout and that should give you the best group. Good groups are not just luck, they also require consistent loads.
J E CUSTOM