need a long range 243 bullet

[L. Cooper]

There are lots of heavy for caliber bullets designed for the .243 that will expand well at long range and slower velocities.

This discussion is about deer hunting according to the OP.

Choosing a bullet for big game hunting on the basis that it will come apart as soon as it hits anything with the argument that it will not ricochet, is not a good idea. Why would you choose a bullet for hunting based on the assumption that you will miss?