Lee case length gauge works pretty simple.
Had a CT electric screw driver jig that fit the holder end and zoom zoom the brass
over a garbage can.
Hard to mess up too badly.
6MT- Is that a motor on your RCBS trimmer?
Yes it is.
For large volume trimming I bought a Frankford Arsenal Platinum trim unit. The SP crimp remover is useless but other than that I find it to be very consistent when you separate by headstamp. The chamfer/deburr bits are great too. I did all my built up over-length .223 brass recently, about 1200 pieces in an afternoon. Not a great option with an injury as mentioned but for others it's a decent choice, I only paid a little over $200 for it.
I’ve just had a few wrist surgeries in my day and the whole primer crimp, chamfer, deburr was irritating it when doing a few hundred at a time. Solving that with a Lyman case prep centre but the trimmer on the frankford is intriguing and sounds fast. Case trimming is the next irritant to render. Have you used the frankford to trim pistol cases?
I’m still leaning to the adapter for the lyman trim station as the adapter is the only expense vs having to get trim dies for every caliber.