I have a primer pocket cleaner tool, but dont like the way it works (doesnt get them as clean as I would like). I have seen the brushes but they cost something like ten bucks at my local gunshop . Made my own out of some stranded wire and it works ok. It seems that ultrasonic cleaners are the way to go, but not in the cards right now.

Should I try some steel wool?

Whats your process?