19-4 cylinder binding, why?

[GJH77]

If, instead, you hold the gun muzzle up and let the empty cases fall from the cylinder, then the un-burned powder stays in the cases and doesn't fall under the extractor. The vast majority of times the revolver begins to bind after 1-3 cylinders the problem can be solved by how the gun is handled for extraction of fired cases. Carry a toothbrush when shooting anything. It's amazing how often it will be used.

That solved the problem for me once I noticed how I was doing it. And now I make it a habit to clean out under the extractor star after about 3-4 cylinders just to make sure.