Using the the taper reamer technique is the same way one would open the hole in a servo arm with a #11 blade from both sides carefully. That also is a good technique that results in a less sloppy clevis or S' bend joint.

The bottom line is use what ever tool you may have and yes I have both taper and fractional/metric step reamers and use both.

As I stated most do not bother with the APC prop centering rings and I offered that just for information.

John