'Crushed' & 'Ground' walnut shells makes a difference.
I was using Crushed shells for metal polish (not reloading, a shop production project) and it worked OK, about what you would expect.
Wasn't paying attention and order 'Walnut Shell's media, and it was pretty useless.
Dusty, really small more rounded grains, and took 3 or 4 times as long to work.
Got to looking at the boxes, one said 'Crushed', the other said 'Ground'.
Makes sense that grinding would make more dust, but the difference in how they worked was obvious.
I tried screen strainers to clear dust, they work OK,
The cheapest way to get rid of dust is pour bucket to bucket (outside or your wife will kill you!) And let the dust drift off,
I also wash walnut shell media, which elminates 100% of dust, but requires drying media afterwards.
Washing is a pain in the butt, but the results are good.
The all time best results was with plastic polishing media.
It's plastic balls with abrasive cast into the plastic, so as plastic wears new abrasive is exposed.
Washes really well and lasts a LONG time,
Limit rattle time because it does have an abrasive.
Being plastic, you can hose it off without issues, and it doesn't clump when it dries.
I tried ceramic balls that are often used to clean & deburr metal production parts.
Won't do that again!
Really hard on the brass, brass plugged up the ceramic really quickly and was really hard to get out .
Took a Corrosive to remove brass from ceramic.
I still find soap & water the cheapest & easiest all the way around.
Throw a 5 gallon bucket of brass in the mixer, a shot of detergent & a shot of Lemi-Shine, in 20 minutes 8,000+ cases are ready to dry and process.
Not that everyone does 8,000 at a time, but you can scale for your application.
I dump cases in separator, roll water & pins out when I use steel pins, and throw damp (not soaking wet cases full of water) cases directly in dry media.
Screening media keeps most fine dust out (it's the dust that clumps), and the little bit of moisture the cases carry in works as dust control in the dry media.
Dry media dries the cases out bone dry, and when they come out and hit the separator the second time they are bright, shiny, slick & ready for processing.
Like the guy said before, if you are going to process right now, skip the dry media...
Wet cases get the excess water shaken off, clean brass gets processed, THEN into dry media to get case lube off and brighten them up.
You don't have to lube a second time when you load, so once through each is enough.
Guys that process and load at the same time will have to adjust to suit what they are doing...
I can't ever remember going directly from range to reloaded rounds directly, but I'm sure I have at some point,
Usually when I get range brass I clean it quickly, then process or store for future processing....
Choosing to load at a future time.
My cleaning & processing are separate functions now, probably because nothing has the potential to go 'BOOM!' when cleaning processing,
I devote full attention when I'm loading, cleaning & processing are distractions.
When you are cleaning, you can drink beer & watch cartoons! I like beer & cartoons!
Watching the machine, loading primers, filling powder bin, feeding bullets, doing inspections of loaded rounds, that's a full time job and I don't multitask very well...
No beer & cartoons
not even a cup of coffee...
I just think the entire idea of ONLY one leaning process is a silly & counter productive.
I'm not big on using a banana to drive a nail, the right tool for the job, get a hammer!
Goo comes off easily and quickly with detergent, so I use detergent.
I have a bucket with clean walnut for taking case lube off, a second with polishing compound added to the media when I want 'Like New' brass, which actually isn't very often, but the buckets are cheap, store easily and the dry media doesn't get choked with the goo.
The right tools for the respective jobs.
If a guy wants to rattle qoo of the cases (hours on end) then that's his choice, no sweat off my brow.
Good luck with the 10th batch of goo covered cases in that media, because it's going to take 24 hours to polish instead of 1 to 4 hours...
Been there, done that, found a better way...
I started with pound coffee cans, now I use a cement mixer, and I'd do bigger batches if I had a better way to move cases, steel pins, water, dry media around.
About 5 gallons is all you want to lift repeatedly, take my word for it!
50 or 60 pounds of steel pins mixed in with 5 gallons of brass is a GRUNT to get chest high into the mixer!
It's up to each one to decide, 100 9mm brass is an entirely different issue than 100,000 .223 cases, so process will change!