In my search for the gun and caliber for my next purchase, I've been looking a balistics on different loads.

Then I'm seeing Federal "high energy" or Hornady "light magnum" loads.
The federal high energy .30-06 180 Nosler Partition is pretty darn close to a standard .300 Win. Mag. 180gr. Partition.

So, are the "high energy" loads showing the true potential of the caliber, and the standard loads "tamed down" to make the super magnums look even better

OR....

Are the high energy loads manufactured in a way thatCAN'T be duplicated safely by handloading?

Any information would be appreciated.