I lost the post where the gentleman asked about using a bead chain with a RCBC measure.
Using a bead chain to break powder bridges will work on most all measures.
One has to drill a hole below the measures drum usually above the threads.
I recomend using a collet powder funnel on the bottom of the drop tube.
Have enough bead chain that it passes through the powder funnel 5 or 6 beads.
As the powder funnel moves up and down the bead chain breaks any bridged powder.
I have made this modification on every powder measure that I own.
Nat Lambeth
Using a bead chain to break powder bridges will work on most all measures.
One has to drill a hole below the measures drum usually above the threads.
I recomend using a collet powder funnel on the bottom of the drop tube.
Have enough bead chain that it passes through the powder funnel 5 or 6 beads.
As the powder funnel moves up and down the bead chain breaks any bridged powder.
I have made this modification on every powder measure that I own.
Nat Lambeth