A foolish consistancy is the hobgoblin of a little mind" Henry Davis Thoreau
Consistancy--- It is the key to accuracy.Everything the same from one to the other. It goes hand in hand with, pocket uniformer,flash hole deburring,trimming,chamfering,ect,ect. Quarter size groups at 100 yards is not impressive to say the least. Like i say,I don't do it to the 1/10 grain,but i do 1 gn. I have 2000 - 223 cases all either 93 or 94 gn's. I sell all the rest.
It all depends on how accurate you want to be.