I'm not sure but I think there is a difference between high pressure and high volume pumps. I be concerned with a high pressure, but not to much concern with a high volume pump.
...I wonder if the matter is as simple as waiting long enough with the drill running to get the pressure up?
The main engine parts that have a big impact of
oil pressure are the main bearing clearance and the cam shaft bearing clearance. Not at all easy to check cam bearings, but you could use plasitgauge to bal park one of the main bearings for clearance.