I want to get a bfg-50 with a NXS 5.5-22x56

Now for the rings, would i have a problem using IOR HD medium rings or should I get the high.

Thanks!

I reply only since no one else did.  My Serbu is on order, however, if one looks at the picture, you can see there is tons of clearance.  That leaves only a good cheekweld to determine heigth.  I have been told that std rings are fine, or prehaps not even low enough.  Anyway, I have a set of Badger 50 cal low rings and a Leupold LR-M3 illuminated scope on order.  I may eventually end up with a different scope and use that one on a SPR, depending on how much shooting I do.

Edited because I called the rings low, the correct term being standard