I would bet that it would be the Ideal Mt Lion Round when shooting them in trees.
Wis I had a 327 for my Contender
I wouldn't think so. You piss that cat off and he comes down and starts killing dogs, you're going to be in a world of hurt with the outfitter. I wouldn't even be comfortable with a .357 on a treed mountain lion, even though they have been used successfully on mountain lion.
Guys, it's a .32 caliber. There are better choices for big game that still don't recoil hard if that is the concern -- like the .41 Mag -- or even the .357. JMHO.