Originally Posted by SDDL-UP
The charts I've seen I don't think show quite that much difference, but even so I can't say it matters much for a defensive handgun round.
Federal's web site comparison chart shows the .357sig having the same ft. lbs. energy at 100 yards as their 9mm does at the muzzle. I'd have to say even though power isn't the be-all-end-all
of successful self-defense it is noteworthy.
The chart also shows .357sig loses about half the accuracy over 100 yards as the 9mm. I doubt many self-defense situations occur at that distance but there it is nevertheless. I do know that I can accurately hit targets much further out with my .357sig than I can with my 9mm; both pistols having a 4" barrel.