A 7mm Rem Ultra Mag in "BLR"? Refresh my memory, but I didn't think that the BLRs came in the Ultra Mag.
I have a 7RUM in a BDL SS but I haven't shot it yet. I got a Bushnell Elite 4200 4x-16x-50mm for it in Warne Maxima Silver rings and bases.
As for the round itself, it is very flat shooting, but at the expense of being very overbore. Then again, I don't plan on shooting hundreds of rounds a year in it either.
BTW what ammo do you plan to use for it. I'm going to try the factory 140 grain core-lokt ULTRA which retain over 85% of their weight and keep a nice mushroom.
Zachary