Ive run the Alpha dropper for 46,000 rds of 9mm. Press is a 1050 with Mark 7 Autodrive running at 1,950RPH with a Dillon resizing die. The only thing that stopped me from running it faster was powder spillage when the indexing stopped.
Out of 46k, I had less than 15 toppled bullets. Yes, I kept track to help give SSI feedback.
Before this, I had the MBF die. Toppled bullets were so common I accepted it as a reloading reality and had the machine crawling at 1,500RPH.
The only headstamp I noticed sticking was CBC.
I HIGHLY recommend this powder dropper. Nathan has done his homework. You won’t be disappointed.