while i suspect the xp3 will perform well for you, i am certain the 180 partition will, as that bullet has been killing stuff, very effectively, since 1948. unless your shooting stuff at over 400 yards, in the wind, i don't see any advantage in a higher bc. i suggest you shoot the bullet that is most accurate in your rifle. and the partition "made its bones" on tough animals like elk. good luck with whatever bullet you select.