I would recommend a 0 MOA mount as you may have issues zeroing for closer range by adding an additional 20 MOA.
Warne does not state the recoil rating of the Warne 20 MOA Extended Skeletonized MSR Mount. The mount may hold of to a 50BMG recoil but I recommend contacting Warne Scope Mounts to confirm.
I went ahead and bought one anyway, and it does nicely.
Yes this item can be attached to a picatinny rail system.
These are 1.435" (36mm) from base to center. You shouldn't have a problem with a 56mm objective on an AR10.
These are 1.435" from base to center, making the centerline 0.07" or less than 2mm lower than your desired 1.5".
We would recommend the ATN dedicated mount or a set of rings because of the length of the center of the ATN.
Warne has not provided that information, even on their own site. We recommend contacting them directly, they should be able to provide you with that information. You can reach them here: https://warnescopemounts.com/contact/
Yes, it will.
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