HP figures? Yah, right...........
I can get SOMEWHAT close, as I use the BME 21 x 8 as a benchmark prop in the motors I've owned. All tached with my own tach, fully-warmed up, all motors within first gallon or so of use.... all using manufacturers' recommended oil and oil ratios.
Taurus T-52 - 7490
BME 50 - 7390
Fuji 50 EI - 6250
(the Fuji is gaining ground with more time, VERY affected by break-in. Same with Taurus; it is still tight)