150 gr., 165 gr., 180 gr., what ever, it doesn't really matter. A projectile that is moving 2500 fps +/- 200 fps, will drop just about any North American game animal. I think there is sometimes too much emphases placed on bullet integrity. I manage to get carried away at times with bullet integrity, when in reality, it boils down to shot placement more than anything else. An example of this is, someone I know well killed a mature mule deer 2 weeks ago using a regular every day 22LR, one shot to the head is all it took. This same fellow, who lives on the Indian reservation, kills deer all year long, or when ever he needs some meat, using only his 22LR.
GS