Hawk,
I've had really good luck with lil-gun in the 357 mag. It's far better in below zero temps in the 357 mag, over 110/296. It also works better in short barrels.
Here's a recovered 180 grain swift a-frame using lil gun. It was a finishing shot on a downed bull. 1200 fps, that bullet made it clear to the offside hide of a massive, rut-swollen neck of a bull moose.
Dunno what you'd need anymore velocity than that? I don't appreciate stuck cases in ruger cylinders, like you get from hot-loaded 357 mag using 110/296.