What I (and everyone who reloads) should do religiously is to perform a visual inspection of each and every charged case to ensure that the powder level in the cases appears approximately equal before seating the bullet. That is the only way to prevent the possibility of over- or under-charging (or possibly no charge at all). I usually do that, 50 cases at a time, in bright sunlight if possible, otherwise with a flashlight.

Regarding plain old Clays, I consider it to be in the same class as Bullseye (other than it is slightly faster). I generally use the same weight of Clays as Bullseye. I still call Universal Clays Universal Clays as I still have an 8(?) pound plastic bottle of it under that name. And I do use the same loading data as Unique if necessary.