.357 sig is like a pissed off 9mm, .40 a shorter weaker (S&W) version of 10mm auto.
Now, the Sig's recoil impulse is much less snappy, pushes back more, the .40 has a lot of muzzle flip.
The .40 is cheaper to shoot factory ammo and reload for tho....
I prefer the sig, personally. Price be damned.
Assumption is the mother of all ****ups.
Know what you know, Know what you don't know. -Paul Pedzolt
"Jack of all trades, master of none, though oftentimes better than master of one" -Mynshul