I purchased an RCBS power trimmer a few years ago - I had to process 1,200 rounds of 6mm-BR.
It was a disaster, and ruined several cases before I cought it.
I still have it and it has rust on it (none of my other tools have rust /ubbthreads/images/graemlins/frown.gif ) It will eventually wind up in the trash!
I finely used the adaptor for the Foster bench trimmer (about $10) and a power drill. Worked great!!
CatShooter