"Yea what I did was take each case and zero it out on the scale dropped the powder checked to make sure each one was getting 42.00 grs none got below 41.80 and the ones that went slightly over 42.00 I dumped the powder and redid them."
Whew - that wears me out just reading it! I think you are over-doing it.
If 42 grains is a safe load, then +- .5 grains will be fine too. Maybe weigh every tenth one if you have to, and eyeball the rest with a flashlight.
I only weight the first one (for run of the mill loads).