I didnt answer you question. I would use either the speer 150 gr hot core, or if factory the federal 150 gr ordinary soft point. I have found the winchester 180 gr power point and the remington 180 gr corlock both to be too hard for light deer, although they would be good for moose. I have had excellent results with speer 150 hot core and 150 hornady interlock in 30 cal and I expect they would be about ideal in 303 if they shoot in your rifle.
