Okay..The difference between the .243 and .223/.224 is .019 in diameter....

Federal Fusion .243/95 grain Fusion is 2980 fps.

Black Hills .223/62 grain TSX is ......3100 fps.

So why will the .243 kill Elk just fine and the .223 won't?My bet is the 62 grain .223/.224 TSX will penetrate as far as the 95 grain/.243 Fusion..Could be wrong and correct me if you have seen different.

I am curious why some may think the .243 is an Elk killing machine and the .223 isn't or can't be atleast equal with todays bullets and loads other than that huge .019 difference in diameter out of the muzzle.

Jayco