Greetings,
I used to tumble my brass in corn cobs or walnut shells. The little pieces would stick in the primer holes and work their way into the shell plate and primer punch of my Star along with other primer grit from the decapping operation. Now I decap all my brass on a single stage machine and wet wash it. The film from the Palmolive dish soap I use for cleaning leaves a faint residue that makes sizing and flaring go rather easy. Additionally, the wet washing has a tendency to clean the primer pockets of crud.
This method has left my machine much cleaner and I only need to service it during caliber changes.
Cheers,
Dave Wilson
Long time Star user. (35+ Years)