I have a 6mm Rem in a '98 Mauser and the Hornady 100 grain interlock is my choice for whitetails. I use a lighter bullet for pronghorns and don't use anything that small on (even) cow elk.
Whitetails are more like big varmints than big game and premium bullets are just not needed for even 200 pound animals. I find the .243/6mm class of rounds fully adequate for deer hunting......and as a matter of fact, even preferable to such heavier recoiling calibers as the .30-06 and magnums.
