I am a Leupold fan myself, I may scrap the Burris idea since the 3p#4 isn't available anymore, only the ballistic plex.
I thought these may fit, but I could be wrong: http://www.talleymanufacturing.com/Products/Lightweight-Alloy-Scope-Mount/Remington/30MM-Model-4-6-74-76-750-7400-7600-(Low).aspx
