I went to a heavier bullet, 115 to 124, and I figured rather than change those discs, the charge bar might be a better solution. WRONG, Lee produces a video on YouTube along with a few other guys. They all missed two very important things. The first thing they don't explain in if you want more or less power, do you turn a brass knob cw or ccw. This becomes very important when trying to get the grains you want, because each time you don't get the amount you must take the powder dispenser off and clean everything, this becomes an a real pain if you don't get it set up the first or second time. I don't think I would buy it again. I think I finally got it today, I'll let you know.