It's all about consistency.
I'm sure their are better ways, but what I do to ensure I get a consistent batch is:
Set up a Redding body die to just touch the shoulder and size all cases
Set up a Lee Collet and size all cases trying to apply the same pressure to each case
debur and champher
clean all pockets
clean all necks with 0000 steel wool
Sort by weight( I usually sort prior to doing any of the above to get them close from the start)
Prime all cases and place them in loading blocks
charge all cases(RCBS CM thrower)
Set the seating die(prefer Foster BR)
After every case is loaded, I roll them on a concentricity gauge
That may not be the best way, but it gives sub 1/2moa consistency in my target rifles.
Many ways to skin a cat