Yes, I dislike trimming and arthritis is catching up to me as well.
If you are thinking of a trimmer that automatically feeds the cases into the trimmer, I doubt you would want to know what it would cost. There are many operations we do with our hands that are not easy to accomplish with a machine.
There are several trimmers on the market that hold the case differently than the Lyman that might make it easier on your hands.
The RCBS trimmer comes to mind. The case holder is a lever affair that clamps the case. The trimmer motor is moved with a lever.
The L. E. Wilson timmer uses a case holder. The case is taped in then placed in the trimmer. Sinclair has a locking arm that is a big lever that makes clamping the case holder easy. Finally there are power adapters the permit driving the cutter.
Unfortunately, the Giraud and Gracy trimmers require that you hold the case in your hands. I do not know how much effort it requires to hold the case, but it may not agree with arthritis hands. A Possum Hollow trims in a similar fashion as the Gracey and Giraud and may provide a relatively inexpensive test.
The Lee trimmers can be adapted to a drill press or lathe. But the case holders can be difficult at times to get them to hold the case tightly. But, an open wrench can be used to snug up and loosen the shell holder. A bit easier on the hands and gets some additional mechanical advantage. At least one gentleman on the forum uses the Lee in a drill press with the drill press table for the stop on the case length gauge. Again, not sure how easy it is to hold the case by hand. I need to try this some day.
Outlets like Harbor Freight, maybe Northern Tool, Grizzly Tools, and other similar locations carry a small, Chinese built mini lathe for about $400. The Lee cutter could be mounted in the lathe chuck and the shell holder stud in the tail stock. Use a wrench to snug up the cases.
Or some permutation of the above.
Maybe this will give you ideas.
P.S. I use the Lee trimmer system and an L.E. Wilson trimmer.
