What size steel media for wet tumbler?

[Dev L]

I have been wet tumbling for 6.5 with the factory steel pins in my Frankford Arsenal wet tumbler with no issues. I recently switched to wet tumbling 223 and found the media gets jammed sideways in the brass body to the point it bends pins and has to be pulled out with a pick. This is obviously no good and I need a new steel media pin size. What size/brand steel media will work with .223 Lapua brass, 5.56 Lake City brass, and 6.5 brass?

 

[Srgt. Hulka]

I have been wet tumbling for 6.5 with the factory steel pins in my Frankford Arsenal wet tumbler with no issues. I recently switched to wet tumbling 223 and found the media gets jammed sideways in the brass body to the point it bends pins and has to be pulled out with a pick. This is obviously no good and I need a new steel media pin size. What size/brand steel media will work with .223 Lapua brass, 5.56 Lake City brass, and 6.5 brass?

The STM tumbling media also gets stuck in the case necks, so I would avoid that as well.
It's great for everything else. I'll be watching this thread to see what others recommend for the 6.5mm.