[mamelukesabre]

Depends on barrel length.

With long barrels, a 357mag outperforms a 357sig. With short barrels, the 357sig is the winner.

Actually, with really short barrels, say a 1-7/8” snub revolver compared to a 3”bbl auto, even a 9mm luger +P outperforms a 357mag.

Unless you are a handloader, 357mag does very poorly with short barrels.

[Myrddin]

My .357 mag is a 686+ with 4" barrel. I do have a 640 around as well for CCW. The 686+ has a long enough sight radius to be a fine performer for indoor center fire target competition.

[supercat]

With long barrels, a 357mag outperforms a 357sig. With short barrels, the 357sig is the winner.

Interesting, since FWIU the cylinder is not counted in the barrel length of a .357mag revolver, but the chamber is counted in the barrel length of a .357sig auto.