I ran the maths and came up with 0.57 degrees of incline necessary for 10 MILS (33.75MOA) of incline to machine either into a base or rings.

This just doesn't "seem" like enough to be, can anyone confirm that my calculaions are correct?

That looks correct to me. 180 degrees is pi radians. You can use something like a sine plate to incline the part in the machine, or you can lift one end a certain amount (depending on the length of the part). btw, 10 milliradians is closer to 34.4 minutes, if that makes a difference to whatever you're doing.

Be sure to angle the part the correct way.

several companies are offering a one-piece base with a plus 10/20/30/40 moa angle milled into it. The 1000 yard guys all use them.

The one I have on my 338 LM is from Murphy Precision.