[skeet]

I have used those to pick cases out but it is another hand movement and really messes up your timing. I pick a case out of one block and do what needs to be done and put it in a block on the other side..No guessing if it has been charged primed sized or whatever. Picking up a tool for every case is kind of a pain. But it do work.I feel that the use of 2 loading blocks gives you a basis from which to be confident ie each case has had the operation done to it if it is on either the left or the right. Just keeps my feeble mind from worrying.