People beat me to the good advice. I would reiterate that when I don't get a full turn, it's been because the drum is tightened too much. With Blue Dot, you shouldn't have a problem with leakage even when the drum is pretty loose. H110 is a tough one. There's just no way to keep it from leaking bad on an Auto Drum. I try to screw the drum in tighter to stop the leaks, but then it just won't turn all the way. My drum works well with large ball powders though like Longshot, Lil'Gun, H335. It does ok with flake powders too but measuring them by volume is always going to be a little inconsistent because they can either fluff or settle.
I don't use the expander in the Auto Drum. I expand separately (with a Redding expander die). I do this primarily because it allows me to set the expansion exactly where I want it without it affecting the powder measure actuation. I also do it because it allows me to expand with case lube when I'm resizing before I clean the cases. I also found that when I did expand in the Auto Drum, cases would frequently stick when pulled out and "bang" and rattle the powder measure and toss powder around in the funnel. So on the Auto Drum, I always use the short rifle adapter (90668) for handgun cartridges and rifle alike. I like powder charging and bullet seating to be precise without the banging that unlubed brass forming causes.