“Anything below POH figures and you are in test pilot territory”
Yes I know, it is huge fun.
My MCR has a POH, but it does not cover the CS prop I have, as well as the equipment fit. Establishing my SOP etc has been great fun and perfectly normal in the home built aircraft world, provided you have the experience to get clearance from the LAA (10 hours on a similar type and min 100 P1). My general aircraft performance is better than the std POH, which means either A) I am an ace test pilot and a superb aircraft builder, or B) my prop is better than the factory one. Unfortunately I think I know which is the most likely
Rod1