Pete, I have Baer custom steel rings and a OIR base on a HS HTR in .308, mounting a NF 8-32x56.
While your idea does mean saving plenty of $$$ it does mean putting a huge and heavy scope and kit onto a small and supposedly light tactical rifle.
I will be mounting the new Springfield Armoury 6-20x50 on this .223.
I have heard some not so good things about these scopes, but only when compared to Nighforce.
I want to try it out for myself, if it turns out I don't like it, I have a friend who would only be too happy to get the scope from me.
Check it out: http://www.riflescopes.com/products/...ry_6-20x50.htm