For .30-06, 10 grains is a big spread.
For .308, 10 grains is pretty substantial. (About 5-6 grains, is the most you should see.)
For .223, 10 grains is massive.
I weigh cases, but don't sort. If I come across any that are out of "range", I just chuck 'em.
I believe that qualifies as "sorting".