For rifles, sorting brass is the only way you are going to bring out the true potential of your gun. Same weight, same internal volume. Norma and Lapua do this for you.
Acurracy and consistency go hand in hand. Consistent brass, consistent bullets, consistent powder charge, consistent holes on the target because velocity is consistent.
If you size your brass properly, the primer pocket gets too loose before any other issues arise. I quit keeping track of how many times a case has been reloaded.