Help with Nightforce Bases

[Phil1]

I have some Nightforce bases for a Win SA. Without mounting it can someone tell me if they are 20, 30 or 40 MOA?
I know there is a formula but I'm hoping that a math wizard might know. Hell lets be honest, tell me!!!
Front base is .388 rear is .550 so the rear is .162(160??) higher.

thanks

 

[Blowby]

Need the length between measured points.

 

[Blowby]

You will then have hypotenuse and opposite needed for the angle.

 

[Phil1]

I don't have access to the receiver, but assuming this is right
In Winchester guns, short actions have a distance between receiver screws of 7.031
from Midway guide.