Jailer, nice jig!
Looks like the hole depth is critical, for pistol cases (40S&W) I'm thinking
a long screw through the right end for length adjustment.
Might need a bracket for it.
I got a HF chopsaw and a Lyman case trimmer, the Lyman chuck diameter is
too large, they just don't work together.
Been using the power adapter for the Lyman with an electric drill,
it's not bad but your setup is a lot faster.