[taylorce1]

Yes kraigwy knows what he is speaking about. However, does the OP reload? If he doesn't who makes an 87 grain Berger load for the .243 Win outside of custom ammunition? If the OP doesn't reload I'm pretty sure that bullet and others similar in performance will be unavailable in commercial ammunition.

Second get a range finder if you want to shoot to 500 yards and beyond or you'll have to stick with shooting at a rifle range with the ranges clearly marked. The maximum point blank range on a 6" target with a .243 will be around 300 yards using kraigwy's load with Berger bullets at 3000 fps. After that you are going to have to utilize holdover techniques or turn the knobs on your scope to dial in the range.