I decided to give .357 Sig a try a few years ago and I'm impressed. I've been a fan of the 125gr .357 Magnum round and now we can get close to those ballistics in a compact sized autoloader.
I had a Glock 31c and 32c but I've sold or traded them. I had a lot of money tied up in them. Living in MA, any Glocks made after 10/21/98 aren't legal for transfer by a licensed dealer but there are no laws against possessing them. And 3rd Gen Glocks are worth a premium if they are in state and ready for a personal transfer.
I ended up trading my 31c with two 10-round mags for a 4" SS Ruger GP-100 with fiber optic sights, 3" Ruger SP-101 .357 mag (the one I really wanted), 8 speedloaders, 3 holsters and 650 rounds of factory .38 Special and .357 Magnum ammo, including 200 rounds of 125gr Hornady Critical Defense .357. I sold the GP100 and the Fobus holster it came with and kept the SP-101.
I sold the 32c for $775, also with two 10-round mags.
I still like the .357 Sig round, so I spent $99 on a .357 Sig Lone Wolf barrel to use in my Gen 2 Glock 23. It does everything my 32c did except for spitting lead in my face when fired from retention. I hate ported barrels.
My longest coyote handgun kill was with that G23 with the Lone Wolf barrel, loaded with 125gr Speer Gold Dots. I would have rather used a rifle but I didn't have time. The coyote was squaring off with my neighbor's dog so I ran out and brought his dog inside my house. When I went back out the coyote was about 175 yards out. I gave it a little extra front sight but it wasn't quite enough. The round hit the ground between its front and back legs. It walked diagonally away from me and stopped again, standing broadside. I was a little heavier on the front sight and squeezed another round off. I guess all that playing around at the club shooting handguns on the rifle range paid off because this one connected and knocked it on its side. I estimated the distance at 200 yards. I was close. My laser rangefinder said it was 203 yards.