Loder, I'm sure you'll get lots of positive feedback on that bullet.
Picture the 7mm 120 NBT as the 150 gr NBT, but shortened to preclude some of the thinner forward jacket, but with the same heavy rear jacket. I've used the 150 gr NBT from a 7mm-08 to penetrate 32" of a 700 lb bull elk. I have no doubt the 120 will do anything needed to a 200lb whitetail, and frankly would have no qualms using it on elk.
The biggest whitetail I ever shot was with a 150 gr Speer Hotcore from a 308. It punched through both scapula's and exited. Deer was around 240 lbs live weight (was 200 lbs dressed). I think the 7mm NBT is the full equal (or better) than a 150 Speer Hotcore.
