From searching the archives, I can't find one prop thrust calculator that folks appear to swear by... or I am not looking in the right place. Anyone able to suggest a thrust calculator that they've successfully proven accurate with real world results?

I am turning an APC Sport 10x3 prop at 14,300rpm on a GMS .32. I've looked out there and tried a few Excel calculators and sites and the results vary from 4.4lbs to 6.5lbs. ThrustHP was also said to be overly optimistic.

Appreciate any input!

somegeek