Advantages/Disadvantages of a 20MOA Base vs 0 MOA

[Timeout]

If you want to compromise, check out a 10 MOA from Ken Farrell.

 

[jareese]

With a 20 MOA rail you will not be in the center of the lens unless you dial 20 MOA. Imagine if you were using the reticle to hold over, the 20 MOA dot in the image attached is where you would be in the lens.

Normally, you're not in the exact center regardless...