I have a Lyman Universal, and a Lee case trimmier for triming .223 Rem, and .221 Fireball. The lymam gets used for the first bit of the .221 when I reszie them from .223 then I use the lee with a corded drill. No bateries to charge average for trim, cnamfer, and debur is about 15 to 25 seconds or so if I am in a zone. Most times I can trim a couple of hundred in an hour while watching tv.
No matter how many times you do it and nothing happens it only takes something going wrong one time to kill you.