I used a .357 on a number of deer and javelina. I used a very hot loaded 125 grain Hornady XTP. This was back in the 80's, so they may be even better now. I had excellent results on shoulder and brisket shots, and even a head shot on a javelina. All one shot kills with perfect bullet performance. The only slug I recovered was a brisket shot on a mature whitetail buck which entered the chest from facing and traveled into the stomach and stopped after destroying a lot of organs. The bullet was beautifully expanded.
That hyper fast load should've really stressed that light slug, but it held up well. I don't think weight was the problem and believe the cartridge is totally adequate, with consideration of its limitations, of course. I recommend the XTP without reservation. I've used the 180 XTP in my .357 Maximum Contender and consider it the ideal bullet in that cartridge, but I can drive it much, much faster than a Magnum can.
It sounds like you did your part well. Don't let a bullet failure sour you on the caliber or your choice of weight. Good luck and please keep us posted.
But for the grace of God, there, I go.