When I look up these loads, I can find no significant difference between the balistics of the 170 vs. the 150. I have 3 model 94's, and 1 marlin 336. All prefer remmy corelokt 170's. The 336 is a tack driver, and 150's open up its regular 1.25 MOA groups to 2 MOA or so. Just fine for deer, but the 170 shoots just as flat, carries more energy through the target, and shoots better in my guns.
With a flat point, these loads shoot similar trajectories regardless of the weight difference. If your gun likes them both, I would default to the heavier load for deer or pig sized game.