RE: Info on a GP engine needed
Not all props are created equal. According to posted test results the APC gives a load value of 1.2 while the Master Airscrew gives between 1.0 and 1.18 depending on the series of prop. The new 3 series props have much wider blades and load the engine more while the older design has a 1.0 value. Matching one to your engines power curve is totally hands on since the lower a value will let the engine rev higher .
For example my Aviatronics .46 recently turned on the same size props static, identical setup.
APC 11X6- 11,800
MA3series 11X6- 12,100
How any combination will fly once airborne and unloaded is anyones guess and is dependent on the power curve of the engine among many other factors.