NEI .51 CVA Maxi

[nkbj]

A beautiful NEI maxi-ball mold has come into my possession that is marked "51 MAX". Looking it up in the NEI catalog from the days of yore I found the listing CVA Maxi Dimensions: "Calibre .51, Base .508, Ogive .520, WT 400".
Any yall having a CVA fifty know if the bore is big enough for a .508 base on a maxi to fit it?