Loading fixed for two CPA rifles 32/40 & 38/55.  Just finished about 400 cartridges each. 38/55’s need a good primer pocket cleaning. 32/40’s could use it too. Will reload again about December-January.

Usually use a scraper style bit either in a power screwdriver or chucked in the lathe, run slow. Wire brush style won’t last the lot. Scraper is OK but does not get it all and can be hard on the pocket.

Thinking about some sort of solvent wash. If not completely clean soften enough scraper won’t have to work so hard. Whatever the case would have to be cleaned  of all solvent before loading. 

Any ideas or advice ?  Acetone, Carb cleaner, kerosene ?

Boats 

Wet tumbler with stainless steel pins, a bit of citric acid, and a squirt of dish soap.  Primer pockets look new along with the rest of the brass.

I 2nd the wet tumbling with ceramic media. Did all kinds of things
On black powder cases before, and when I got the tumbler and ceramic Media, I now do nothing else. Quick and easy , very clean

Part of my issue is many years using Large Pistol, bought a box of 500 38/55, sized 125 to 32/40, 1993 with my first CPA. Latter split another 500 32/40 box with a buddy 

Due primer availability switching to large rifle. They need clean pockets. 

Boats

I dropped the steel pins and media after years of doing it. Use a sonic cleaner exclusively  and  Isonic cleaning fluid.  Normally 50 rounds per load for 30 minutes.I dump the other cases in hot water and let them pre soak to loosen the primer fouling on cases that will be in next batch.  Dump the dirty fluid,rinse,start the next batch. A squirt of Dawn soap also....If you want the brass shiny-er  ,a dash of Lemi-shine dishwasher soap.

I would like to try the ceramic media, and would like to know where and what size and shape etc.? I have for quite some time been using pins, they get the brass very clean but do get stuck up inside on occasion which forces one to check all. Any help would be greatly appreciated.

Ceramic media can also be found on Shiloh’s website

Dave Maurer died a few years back.  A guy named Shooter2 owns the business now.

Shooter 2

5864 N Bollinger Rd

Vestaburg MI 48891

(989) 330-5179

Thanks to all who responded. Thanks to marlinguy for his suggestion, and will try ebay first as I am on their site often. Never thought to find them there, but have found some pretty obscure items there.

I shoot black powder only in my .38-50 Hepburn and I just pulled this brass out of the tumbler, they are still wet. 
I dont scrape the primer pockets, did that in the past and they just made the primers fall out in time using a brush or screwdriver. 
I just deprive the cases and soak them for a short time 15-20 minutes if I dont forget them. Then I use an ultrasonic cleaner and throw them in a wet tumbler. I use a Frankford Arsenal. I used to use the SST pins and ceramic pins mixed till I found those little white ceramic balls   
I first got the 4 mm and they edged the brass like brushed brass plumbing fixtures so I switched to the 3mm balls and they do not stick in the flash holes and clean and polish the brass like using brasso like I used to polish my brass belt buckel when serving in the service.
2mm is too small and it ends up on the floor and plugs the flash hole. 
I dump the tumbler barrel in a large pasta strainer sitting on a bucket to drain the water off. 
I have found nothing that cleans brass like what I using now.

Kurt