I'm glad everybody else seems to like theirs, I have both the drum and the autodisk, currently the drum is collecting dust. The way the powder hopper just pulls right off the measure body leaves much to desire and the measure holds a lot of powder in between the drum and the powder cutoff. I put the powder measure and a lee powder measure riser on top of my powder through die and the drum wont fully actuate unless I put a washer in between the measure and the riser. The thing is a powder magnet as well, between the manufacturing oils left behind and very severe static. I tried to push a drier sheet down the powder drop and it got hung up inside so badly that I had to use a hammer, wooden dowel and 20 minutes to get it out before discovering the bottom drop tube simply pulls out. now I have some damaged plastic inside the very difficult to disassemble measure.
In short, I had a number of bad experiences with the thing and have found it to be no more accurate than my pro autodisk. The only advantage being that you can hit the points that the disks don't cover; however, I'm happy with the weights the disks give me. I originally bought it to be able to accurately throw 35-45gr charges of lilgun, w296, aa1680(all fine ball powders which should meter accurately) for 500s&w. I get variations up to 1 whole grain which is not acceptable... back to the scale and dipper method... Another reason I bought it was to more accurately meter unique and 700x. It does just as good(bad, +/-.3gr) as the autodisk
As for the brass drum- I recall youtuber fortunecookie45lc having issues with that drum in lee's new overpriced cast powder measure.
