I have just confirmed both through empirical experience and internet confirmation that Accurate #7 is a leaky powder, which is a bit of a shame as was one of the few powders locally available when I got setup with 8lbs of it. I recently upgraded to the Lee Auto-Drum on my Lee Turret press and a definite improvement over the auto-disk. However, the powder still leaks out between the plastic drum and metal enclosure. Not nearly as much as the disk but still very noticeable after a good reloading session. I tried googling and searching here but couldn't find anything helpful, would anyone have suggestions for mitigating this?