There is a minimum impact velocity for any bullet. I believe most of the Barnes are 1500-2000 FPS, but there is some variance between calibers, and even variance per bullet weight for a given caliber.
This guy says it's 1500 for the 168.
So if you know your muzzle velocity, you can use any ballistics calculator to tell you what your max range should be.
However, for most, their shooting skills should be the limiting factor. Just because your bullet will perform and you got some fancy scope dials to crank on doesn't mean you should take that long shot.