I use a single stage press set up and I would highly recommend getting one or two cartridge blocks that hold 50 rounds each and get a powder measure, you fill the cases and put the cases in the block, then you can at a glance see that they are all charged. Since you are reloading a 45acp cartridge I would recommend the RCBS lil dandy powder measure and a rotor that gets you the charge you want, that way you can put all the cases in the block and charge them by holding the powder measure in your hand and go from case to case, then when you have filled all the cases you can easily look at them all and see that 1 they are charged and two that you have not double charged any of them. Good luck with your efforts.