I posted earlier this year about an experience I had trying to kill a large bear with a 357. There were replies from people that had seen several bears shot with 357s, and it did not get good reviews at all.
I have shot some deer with a 32 Special which is a ballistic twin to the 30/30 and can see that turning or stopping a bear. It does a heck of a lot of damage, especially at shorter ranges. I also have shot a lot of pistol and rifle bullets into home made test mediums, and can't see the 357 being even in the same class as a 30/30. Bill Jordan worked with Smith & Wesson to develope the 41 Magnum because the 357 was somewhat lacking as a people stopper.

Fred