Every thing I posted is off of Federals web site. Go argue with them. The 100 gr federal sierra shows less wind drift than just about every non magnum caliber and was flatter shooting. One .federal 270 bullet was a tad better and one Federal 280 rem was a tad better. I post actuall data and and you call me a liar.
What started this is someone said the .243 aint no good at long range and I post data that shows it to be better than most. I'm sorry you cant accept this.
Faster, flatter, and less wind drift @ 500yds with 925 lb energy. Go compare for yourself

Now energy verses velocity is another issue. let me copy and paste something.



To begin with, the term “knockdown power” is a misnomer, unless you’re referring to a giant cannonball, or perhaps a motor vehicle crashing into a deer on some midnight highway.
Knockdown power, as it refers to sporting-rifle bullets, is an animal’s physical reaction to the bullet’s impact and entry. More specifically, if the animal falls immediately as if the earth has been jerked from under it, the bullet is said to have delivered knockdown power and the happy hunter congratulates himself for the wisdom of using a great caliber.

On the other hand, if the animal doesn’t fall immediately, wanders about or dashes off, even after being hit with a well-aimed shot, the caliber may be condemned as having poor or nonexistent knockdown power, its maker roasted in campfire effigies and lurid rumors spread.

The fact of the matter, however, is that no reasonably applied big-game caliber is either good or bad all the time—and there’s the rub.