I don't put too much stock in ME figures, they don't translate to much of anything in the real world. Sad fact is they are based on velocity squared times weight. A BB at 4,000 fps may have more "muzzle energy" than a 45/230 at 750 fps, but that doesn't make it a better round unless you're shooting mosquitoes. Enjoy your boullettes........but I'll stick with what works for me.