We have one of each, 56 on a 300 win and a 50 on the .338 Lapua, both with 40 moa bases and #8 contour barrels. Yes, the 56 took a 1.125" set of rings and the 50 took 1" Other than that we haven't owned the 56 long enough to see the advantages if any. But it does look good..
I'm just researching now. I have a gun being built that I wanted to put the
NXS 8-32X56MM NP-R1 on. Height isn't an issue for me. I just wanted to make sure it wasn't something optical. Thanks for the replies!