I'll throw in a few thoughts.
Sort your brass first. If using different kinds be aware the have different internal volumes. Different kinds of brass will may equal different loads. at a minimum I try to keep them in batches by kind (manufacture), and how many times fired.
also I've heard of folks wanting to shine their pretty new rounds when their all done by tumbling them. NOT RECOMENDED. the tumbling will break the powder down to basically flash powder. tumble them too long and they can become very dangerous.
