I use a single stage press, so all my charging is done with a Lyman 55 and a loading block. Check weigh about one in every 10 or 15. then visually check them in the loading block before doing bullet seating. It helps to "tap" the handle an extra time in the down position to make sure all the powder clears the measure. I've noticed that without a baffle in the hopper, the charge weights will vary a little as the powder level goes down, so I keep the can of powder handy and top it off after about 25 or so rounds. One nice thing about TB, you can visually check powder levels even in 30-40 or 30-06 cases, when using Unique or other "normal" pistol/shotgun powders, it's hard to see the powder, I always use a pencil (marked for proper powder level) to check each case.