The comparo above was just ballistics between the 25-06 and the .243. Not even talking about bullets just the ballistics. I picked the partition in the 25 cause it was the flatest shooting I was just showing the .243 is comparable to the .25. In "Kinetic energy" and bullet drop.
But now that were talking about bullets, I would choose a softer more expanding bullet because of the deer size I hunt. they rarely get to 150lbs. to me a partition would just blow throught without expanding. To be honest I like the 85gr holow points in my .243 for deer.