I currently own 3 7RMs and load for others, it's my favorite cart. I've taken piles of whitetails with that particular cart with several diff bullets. On midsized whitetails I prefer the 150 NBT and 140 NAB. Lighter pills would often not exit. I get exits on deer nearly every time with the 150NBT. Even the 140NBTs failed to exit on some deer when launched at 3200 fps.
I think you will find there is not much difference in the real world trajectory of the 150 NBT and 140 NAB when compared to the 120NBT, I'm talking around an 1" variance between all three in terms of trajectory and wind drift. That said, there is no reason to shoot the 120 because it may fail at high velocity.
Good Luck
loder
