I did a search, but I have not found anyone with this issue. I have a Mr. Bullet Feeder Pro that came with the Mark 7 Revolution I bought to load 9mm. I had a regular Mr. Bullet feeder on my dillon 650 that works fine, but I'm having major issues with the pro version. The issue i'm having is that it will only feed 6 bullets and then stop. The bullets above the dropper won't drop down. I'm loading Zero 124g FMJ so the bullets are staggered in the drop tube. Now the funny thing is this is only with the Pro version of the dropper. If I use the Aluminum drop assembly from the standard Mr. Bullet feeder it all works fine. I was thinking of polishing the top portion of the dropper as I can see some tool marks and thought the bullets might be hanging on there. Anyone else have this issue?