As you know the .357 sig was meant to compete with...........the all time champ knock em down unless it is a 44 mag round
Basically.. the 125 grain HP in a .357 revolver just will not go away as the king The sig? a great bottleneck and EXPENSIVE round in semi auto.. basically a 40 smith and wesson necked down to .357 feeds good.. works good.
Soo.. 6 or 8 rounds out of a revolver compared to? 12 or so?
Ok.. the revolver.. any shape bullet is fine.. ................it has the rep which is deserved..........It can shoot cheap 38 spl ammo to practice.
The sig? Auto loader.. which.. the 357 round (made in 1935) can't do unless u consider the Coonan which.. does offer a semi auto .357 mag.. being a bottle neck case? it feeds well.
cons.. the .357 is slower to shoot in revolvers with less capacity.. couple of rounds.
The sig? cons? it is expensive and hard to reload.. 4 steps are needed. Also.. the guns are EXPENSIVE along with the ammo.. the revolvers for .357 mag are everywhere and can be had for.. $300 to $800 bucks?
Ok... which is more accurate? Not many will say that a good .357 mag revolver will not outshoot and semi auto in the right hands.
Soooo you puts your money down and you takes your chances.. I like both calibers.