RE: the science of prop selection?
Keep in mind that several props of the same size but from different manufacturers have different performances, so I am with Gray Beard when saying:
[Read the instructions that came with your engine then start flight testing with those sizes until you find the prop that will fly the plane the way YOU, the pilot likes the plane to fly.]
Some Master Airscrew props give more revs than APC
And some wood props give less revs than APC but with better efficiency.
This is a matter of try and find the right one.