There's all sorts of things that go on changing type, brand, and pitch at the same time.

The APC grey props are very clean aerodynamicly... so they put a lower load on an engine than the same size wood prop. (same diameter and pitch)

Increasing pitch without decreasing diameter mans you are increasing the load again.

Are you sure you want to try this change? [:-]

You didn't say which engine or which specfic aircraft. and prop choice needs to take these into consideration. What is the result you are looking for? If you are after a better climb rate... you are doing EXACTLY the WRONG thing.