I've done dozens of the lee and a few of the others using a split rod and drill motor, you just have to "sneak" up slow, I use a dial dial indicater on my loaded ammo to be shot in matches and nothing changed, I even took a 224 out to 7mm with a drill and honed up, I had to anneal it before drilling, the others are harder and take longer but the lee is still very hard, you will have to sacrifice a few bullets sneaking up on the final size, I have 30 or so from 22 to 54 cal and all are custom sized
Bill