You know...way back when I had only a Rock Chucker and my case blocks and...when I used to charge all the cases and then proceed to seating/crimping...I used a flashlight to peer into every case in the block. Just the same as anyone else, just like the book says to do.
Why did that work so well?
For this one reason...It took less than a minute, I started top left and went across every row to the right...just as you read a book. In that minute I knew that this one step is more important than anything else I would do to this batch of loads. No distractions, no tapping my foot to the radio music, no 'quick scan' of the block as a whole...just 100% attention to the task at hand..."Peer into each and every case in the block!"
When we get in a hurry or start shortcuts to save time, when we are distracted or minimize the importance of each and every step in reloading...well, we set ourselves up for 'Old Murphy' to play havoc with our craft!