Who has added a + moa base rail or rings to an already + rail? Who believes that adding a + base/rings to an aready + rail gives you the equivalent of the 2 added together? Well, it shouldn't! Think about it! You have a 0 base and add just say +20 for reference that it adds 20 or you have a +20 and add a 0 base/rings/rail. It should be +20, correct. Now take a +20 and top it with another +20 it's +400. If you have + moa rings (I've never bought any) the distance between (how far the 2 are separated) will make the +?? not be quite the +?? it states. That is if it's a 2 ring setup. Interested on hearing thoughts!