j,
I have shot the 7mmRM for alot of years and my bullet of choice for deer (whitetails) has been the 150gn Ballistic Tip in front of 67gn of RL22 with a BR2 primer. I was getting 3100+fps out of the Sendero that I had developed this load in. This load shot sub .5" for me and accounted for lottsa critters demise.
I do remember comparing the 120gn to the 150gn'r out to 500yds and I was suprised how the wind tossed the 120 around. Mind you, this was before the A-max, AccuBond and a host of other "premium" bullets were on the scene.
I traded that Sendero in for a 700P and two weekends ago she (700P) produced a .4215" 3-shot group with the 150gn NBT using 63.5gn of IMR4350 (.5gn over max!) and R9.5M. Using Noslers #5 reloading manual, I guesstimated the muzzle velocity at 3275. That's probably a bit high, but I'll chrono it soon and see. JohnnyK.