I've used a Lee case trimmer for every rifle calibre that I reload. You can do it by hand [a pain]], or you can chuck it in a cordless screwdriver - slow is good. I've used mine on many thousands of cases over the last thirty-something years I've been using them.
With the Lee set-up, if the case needs a trim then you use it until the cutter stops cutting. Then de-burr.
tac