A newbie here and I have a question for all you experienced machinists out there. A question arose in my mind while I was working on a project. I needed a reamed 7/16 hole for a crankshaft on a little engine I'm starting out with. Work is 1/4" mild steel. I wanted the hole to be as accurate as possible for my equipment, (mini-mill). Question is: should I a) drill the hole to be reamed with a center drill, then a chucked drill then put the reamer in the chuck and ream, or b) center drill, drill the hole with the chuck then switch the chuck out for a collet (R8) to hold the reamer and ream. Presumably the collet hold would give a more accurate hole, or c) I'm really overthinking this. My chuck has about .004 runout.