Lee Pro 1000 inconsistent powder drops

[Cowboy T]

I experienced this just today with 2400 powder. My goal was to drop 13.0gr, and I was getting between 12.8gr and 13.2gr. Fortunately, my load has some wiggle room, so no worries, but I was still a little concerned.

This is the first time I've ever seen the Pro Auto-Disk Powder Measure do this. Normally it's within 0.1gr every time, no matter what powder I use.

[NotEnufGarage]

The disks take some breaking-in to put a polish on them. Clean and lube with dry graphite, make sure you have consistent shaking action on the press and your drops will get more consistent.

I have the Pro Auto-Disk on my Load Master and switched it from chain return to spring return and the drops got more consistent, especially with the double disk kit for rifle cartridges.

Don't over-tighten the nuts and expect to have a little powder spillage.