have it your way ........but single point cutters dont chatter dig in like that ... you dont use a .22 cal buffalo shooting do ya....... occasionally in engineering it pays to use the correct tooling , an adjustable multi flute hand reamer is not the correct tool , not in my experience anyhow... im sure some guys have managed using a razor sharp or new adjustable hand reamer and got away with it ...but even a blind squirrel gets a nut sometimes

oh and by the way ........if you try a hand reamer on the original mystery alloy which is very soft you WILL have a problem.. it will deform rather than cut ...its a bit like trying to thread copper it can be done with the right tooling but only with the right tooling

"There's the way it ought to be and there's the way it is" (Sgt Barnes)